I am not quite sure ____ he will come or not ?

A. were really

B. has really been

C. had really been

D. would really be

A. what; what

B. what; that

C. that; that

D. that; what

A. of whom

B. by that

C. by whom

D. by which

A. have read

B. had read

C. should have read

D. am reading

A. share

B. shared

C. having shared

D. about to share

A. are to be blamed

B. is to blame

C. are to blame

D. is to be blamed

A. where she works at

B. in which she works

C. for which she works in

D. in where she works

A. why

B. what

C. that

D. which

A. are too many rooms

B. are too much room

C. are plenty of rooms

D. is plenty of room.

A. know who is he

B. know who he is

C. knows who is he

D. knows who he is