Question

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10) Ann's hair was dirty Now it is clean. She (to wash) it. 11) We (to sail) around the islands this time next month. 12) It was Keith's first driving lesson. He (to be) very nervous and (not to know) what to do.He never (to drive) before. 13) I saw Carol at the party. She (to wear) a really beautiful dress. 14) Every morning I (to get up) at 7o'clock and (to go) for a swim in the lake before breakfast. 15) By next Christmas we (to be) here for 8 years. 16) Do not lend him your car. I know him. He (to crash) it. 17) You (to hear) the storm last night? 18) The river (to flow) very fast today-much faster than usual

Answer 1

10) had washed
11) are going to sail\ will sail
12)was, didn`t know, he have never driven 
13) was wearing
14) get up, go
15) will have been
16) will crash
17)have you heard
18)is flowing