Structure Study. Present Perfect Tense Form Use Associated with have/has + the Past Participle 1) to indicate an action happening between
1. When ________________ the research team? a) have you joined b) did you joined c) did you join d) have you ever joined
2. ___________________ in MIT? a) Did you ever worked b) Have you ever worked c) Worked you d) Didn't you have worked
3. That's the best presentation ______________ a) I never heard b) I didn't hear c) I used to hear d) I've ever heard
4. He's the most distinguished but difficult scientist _____________________ a) I never dealt with. b) I never had to deal with. c) I've ever had to deal with. d) I've never had to deal with.
5.I two difficult questions today and I must do something about it. a) have been asked b) asked c) have be asked d) was asked
6. ___________________ a theory about a new elementary particle last week. a) I put forward b) I've already put forward c) I didn't put forward d) I putted
7. ______________ a binding contract with the lab last year and it is still valid. a) We have signed b) We signed c) We haven't signed d) We have sign
8. The reason I look so brown is that _______________ from a conference on nanotechnologies to Greece. a) I come back b) I came back c) I never came back d) I've just come back
9. You ____________ to a word ____________ at the conference. a) listened I haven't said b) didn't listen I say c) listened saying d) haven't listened I've said
10. It's obvious that ________________ this report. a) you haven't read b) you didn't read c) you don't read d) you read not http://www.better-english.com/grammar/pspp1.htm
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