Not until he retired from teaching three years ago ___ having a holiday abroad.
A. he had considered B. had he considered
C. he considered D. did he consider
After ____ seemed about a quarter, Li Lin managed to work out the difficult math problem, which pleased our teacher.
A. that B. it C. what D. which
It is difficult to design a programme that will meet the__________needs of all our users.
A. flexible B. diverse C. average D. precious
What do you think of the proposal that improvement ____ in the type of vacuum cleaner?
A. be made B. will be made C. would be made D. has to be made
______ I spoke English before foreigners, I was a student of high school.
A. The first time B. For the first time
C. At the first time D. At the beginning
You see, I ____ all afternoon and I don’t seem to have done anything.
A. shopped B. have been shopping C. have shopped D. was shopping
