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Упр. 36. Раскройте скобки, употребляя глаголы в формеPresentPerfectили в PresentPerfectContinuous.

1.   She (to be)is ill since last week.

2.   He (to know) me since childhood.

3.   I (to try) to understand you for half an hour.

4.   He (to be) in Kyiv for three years.

5.   She (to look) for her key since she came home.

6.   They (to be) here since two o'clock.

7.   My sister (to sleep) for ten hours.

8.   We (to be) married since 1977.

9.   How long Mary and Ann (to know) each other?

10.  We (not to see) them for three months.

11.  His car is very old. He (to have) it for many years.

12.  It (to snow) for four hours.