Раскройте скобки, употребив глаголы в нужной форме (Perfect или Perfect Continuous)
1) Tom (smoke) ten cigarettes today.
2) Ron (study) very much this term.
3) It (snow) for two hours.
4) He (play) chess since he was eight.
5) Jim is away on holiday. He (go) to Spain.
6) I didn’t know who she was. I never (see) her before.
7) She (play) tennis since she was eight.
8) The match (finish) by 10 o’clock.