The students ____ busily when Miss Brown went to get a book she ____ in the office.

A. spoke, had forgotten

B. spoke, have forgotten

C. had spoken, had forgotten

D. had spoken, have forgotten

A. never think, are going

B. never thought, were going

C. didn’t think, are going

D. hadn’t thought, were going

A. will arrive

B. arrives

C. is arriving

D. is going to arrive

A. fell, was riding

B. fell, were riding

C. had fallen, rode

D. had fallen, were riding

A. left, had arrived

B. had left, had arrived

C. left, arrived

D. had left, arrived

A. had enjoyed

B. was enjoying

C. enjoyed

D. had been enjoying

A. don’t know, were

B. hadn’t known, are

C. haven’t known, are

D. didn’t know, were

A. he comes, come

B. will he know, will come

C. he come, will come

D. will he come, comes

A. did you put, have put

B. have you put, put

C. had you put, have put

D. were you putting, have put

A. I’m deciding

B. I’ll decide

C. I’d decided

D. I decided