By the end of 1976, we( ) the demand for petroleum.

A. met B. have met

C. had met D. had been meeting

A. will graduate B. will be graduating

C. will be graduated D. will have graduated

A. was talking B. talked

C. would talk D. had been talking

A. did you do B. have you been doing

C. have made D. were you doing

A. was looking forward to B. have been looking forward to

C. had been looking forward to D. looked forward to

A. have you arrested B. will have you arrested

C. must have you arrested D. have you arrest

A. should come B. is coming

C. comes D. will come

A. had been promoted B. has been promoted

C. has promoted D. had promoted

A. discovered B. has discovered

C. discovers D. had discovered

A. had been cleaning B. is cleaning

C. has been cleaning D. was cleaning