Use Past Simple, Present Perfect, Present Perfect Continuous.
1) His friend (come) back to England last Saturday.
2) I never (be) to China.
3) ___she (cook) pizza for ten minutes?
4) Vicky (not / get up) at 5 all summer.
5) Her hair is wet because she (swim) in the pool.
6) He (not /be) taxi driver two years ago.
7) My Dad (work) as a dentist for three years.
8) The children(drink) the lemonade yet.
9) I (know) him most of my life.
10) Alexander Fleming (discover) penicillin in 1928?
11) The teachers (explain) the rules to me.
12) How long your friend (wait) for me at the station?
13) you (find) the book?
14) He (to fix) his car and now he (not to have) any trouble with the brakes anymore.
15) They (walk) together to the market every evening for the past 10 years.
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