Предмет: Химия, автор: kraken45

алдкдудцшбкбзебзбыыьзфькькбкызе на..й нааааа

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Автор ответа: gusmakvlad
0
2СH4=C2H2+3H2
3C2H2=C6H6
C6H6+Br2=C6H5Br+HBr
C6H6+HNO3=C6H5NO2+H2O
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1. Complete the sentences with the Present Simple or Present Continuous form of the verbs in brackets. Be careful with stative verbs.

1 Tom usually ............................. (ride) his bike to school, but he ............................. (go) by car today. 2 Jane ............................. (not like) tea, but she ............................. (drink) it today because she’s ill. 3 Mark and Jill ............................. (try) to improve their French. They ............................. (study) together every afternoon. 4 My little sister ............................. (not understand) her homework, so my mum ............................. (help) her now. 5 My friend is on holiday now and I ............................. (want) to talk to her. 6 I ............................. (think) he is telling the truth now.

2. Write questions and answer them about yourself. Present Simple

1 your grandma / often / visit you / ?

3 your dad / play / the guitar / ? ................................................................... ................................................................... ................................................................... ...................................................................

2 you / watch / TV / in the evening / ?

4 your friends / like / computer games / ?

3. Change the verbs in brackets into the Past Simple. Some are regular and some are irregular. Yesterday (to be) _______________ a busy day. I (wake) _______________ up at 6am, (have) _______________ breakfast quickly and then I (go) _______________ to work. I (finish) _______________ at noon and then (eat) _______________ some lunch. Afterwards I (drive) _______________ to the shops, (buy) _______________ some paint and then (paint) _______________ my bedroom. My housemate (come) _______________ home from work so I (help) _______________ him paint his room, then we (repair) _______________ his chair as it (wobble) _______________ a lot. I (wish) _______________ I hadn’t, as I hurt my hand! After that I (clean) _______________ my house. I (vacuum) _______________ all the downstairs and then (tidy) _______________ up the living room and the kitchen. I was pretty tired by then so I (eat) ate some dinner, (yawn) _______________, and (go) _______________ to bed!

4. Complete the sentences with the past continuous form.

1 I _____________________ (run) when you saw me because I was late. 2 They _____________________ (wait) for a bus when the car crashed. 3 Gabi and Laura _____________________ (dance) at 8pm. 4 Tomek _____________________ (not / eat) a sandwich when Ben fell into the river. 5 What _____________________ Carol and Jack _____________________ (do) when Pedro phoned? 6 _____________________ Sally _____________________ (take) a photo when I phoned? 7 Pedro and Tomek _____________________ (not / laugh) when Ben fell in the river.

5. Complete the sentences with the verb in brackets in past simple or present perfect.

1. She loves Paris. She ..................... (be) there many times. 2. Bill ....................... (work) in that company for 3 years. (He still works there). 3. They ....................... (go) to London on holiday last summer. 4. I ....................... (read) that book. It´s good. 5. His parents ....................... (be) here yesterday. 6. They ....................... (go) to Germany when he ....................... (be) only 4. 7. ........... you ......... (watch) a film last night? 8. I ....................... (have) some toast when I got up. 9. He ....................... (live) in Rome since he was a teenager. 10. The house looks different. .......... you .............. (paint) it? 11. I ....................... (not see) you in class last Friday. 12. Shakespeare ....................... (write) over one hundred sonnets
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