Предмет: Химия, автор: Lesyayko

как из этиленгликоля полиэтиленгликоль получииить????

Ответы

Автор ответа: dantissimo

по реакции полимеризации

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Предмет: Английский язык, автор: sheremetyevaiam

1. Read the dialogue and complete the gaps with the words in the box.
all are back change else gift got have help much over refund
Assistant: Good morning. Can I 1_______you?
Customer: Oh hi. Yes, I’m looking for the Twilight: Eclipse
DVD. Have you 2_______ it?
Assistant : Yes, it’s just 3______ there, on the top shelf.
Customer : Oh yes, I see it. Hmm, I can’t see a price on it.
How 4 ______ is it?
Assistant: It’s 19.99.
Customer : Actually, it’s a birthday 5______ for my friend.
Can I get my money 6______ if someone else
buys it for him?
Assistant: Yes, if you keep your receipt, you can get a full
7___________ .
Customer: Great! I’ll 8___________ it.
Assistant: Is there anything 9________ you need?
Customer: No, that’s 10________ , thanks.
Assistant: That’s 19.99 then, please.
Customer: Here you _________11 .
Assistant: Thank you. Here’s a penny 12__________ and I’ll
put your receipt in the bag.
Customer: Cheers.
Assistant: Thanks very much. Goodbye.
Customer: Bye.
2. Look at the sentences and put the verbs in brackets into
the present perfect form.
1 My best friend and I (know) each
other for over ten years.
2 I (not buy) anyone a present recently.
3 My father (have) the same job for
ages.
4 I (live) in the same house since I was
born.
5 My English teacher (not work) at this
school for very long.
6 I (not spend) much money recently.
7 My partner (be) at school today for
longer than me.
8 I (send) a few text messages today.
9 I (not make) any new friends in the
last few weeks.
10 Nobody in my family (receive) good
news recently.
11 I (feel) happy since I woke up this
morning.
12 I (not see) a good film at the cinema
for a long time.
3. Read the sentences and choose been or gone.
1 ‘Hi, can I speak to Terry, please?’ ‘I’m sorry, he isn’t
here at the moment. He’s been / gone out for lunch.’
2 ‘I’ve been / gone to Germany three times, but I’ve never
been / gone to France.’
3 ‘Have you been / gone to the butcher’s this afternoon?’
‘No, Kelly’s just been / gone. She should be back soon.’
4 ‘I haven’t seen the neighbours for ages.’ ‘No, they’re
away. They’ve been / gone to Mexico for a month.’
5 ‘Wow! You look tanned. Where have you been / gone?’
‘Australia! The weather was great.’
6 ‘Have you been / gone to the skate park recently?’
‘Yes! I’ve been / gone there every day this week.’
7 ‘Why isn’t Jade answering the phone?’ ‘Maybe she’s
been / gone to work already.’
8 ‘Hurry up, Sam!’ ‘It’s too late. The train has already
been / gone.’

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