The twins were so _________ in their TV play that neither of them heard the door ring．

A．engaged

B．occupied

C．absorbed

D．concentrated

Many a book about Africa _________ by Mary last year but I don’t know whether she has finished them．

A．has been written

B．were written

C．have been written

D．was being written

As we all know, the Chinese Red Cross is one of the organizations, _________ the purpose is to help the sick and the needy．

A．of which

B．whose

C．which

D．of whose

Only after you have known someone for some time _________ to appreciate his real worth．

A．begin you

B．do you begin

C．you do begin

D．do begin you

Tom always plays basketball on the weekend．I’m sure he _________ basketball when we get to the playground．

A．is still playing

B．still plays

C．will still be playing

D．has played

We visited the school that lies in ________ was a big factory twenty years ago．

A．that

B．which

C．what

D．where

The little girl showed no anxiety before the competition．She seemed ________ it pretty well．

A．to prepare

B．preparing

C．having prepared

D．to have prepared

Every year, when the peach blossoms are at their best, a festival ________ at the Beijing Botanical Garden．

A．is held

B．will be held

C．held

D．holds

I am searching for the key you gave me before lunch．I can’t remember ________ I put it．

A．where was it that

B．where it was that

C．that where was it

D．that it was where

She insisted not only _________ to the school but also ________ the glass of the window．

A．had he gone;had he broken

B．he had been; he had broken

C．should he go; he break

D．had he been; had broken