Раскройте скобки, употребив глаголы в нужной форме (Perfect или Perfect Continuous) 1) Tom (smoke) ten cigarettes today.

1) Tom has smoked ten cigarettes today. 2) Ron has studied very much this term. 3) It has been snowing for two hours. 4) He has been playing chess since he was eight. 5) Jim is away on holiday. He has gone to Spain. 6) I didn’t know who she was. I have never seen her before. 7) She has been playing tennis since she was eight. 8) The match had finished by 10 o’clock.