1 . The scientist ______(refer) to at the meeting yearterday will give us a lecture tomorrow. (所给词的适当形式填空)

2 . Jim has retired, but he still remembers the happy time ____________ (spend) with his students. (所给词的适当形式填空)

3 . Look! The student ________ (seat) at the back of the classroom is buried in a novel while the teacher is giving a lesson. （所给词的适当形式填空）

4 . A team of scientists________ (lead) by Professor Eli Shlizerman at the University of Washington has now found the answer. (所给词的适当形式填空)

5 . Most of the people __________ (invite) to the party were famous scientists.

6 . Most of the experts ______ (invite) to the meeting are from top universities.

7 . The thief ________(question) by the police a moment ago still couldn’t tell the truth. （所给词的适当形式填空）

8 . The girl ________ (dress) in red is my good friend. (所给词的适当形式填空)

9 . The book ________(write) by a farmer is very popular among students. (所给词的适当形式填空)

10 . Problem ________(discuss) at the meeting yesterday was very difficult to solve. (所给词的适当形式填空)