Jenny was very sad over the loss of the photos she had shot at Canada, ________ this was a memory she especially treasured．

A．as

B．if

C．when

D．where

The child blew the candles ________ before he cut the cake into pieces．

A．off

B．up

C．out

D．down

In self-service restaurants waiters usually don’t bring you dishes．You have to ________ yourself to whatever food you want．

A．serve

B．bring

C．provide

D．help

We ________ a bridge over a river in my home-town last month．

A．were building

B．build

C．would build

D．are building

I don’t suppose anyone will be willing to do that, ________?

A．don’t I

B．do I

C．won’t they

D．will they

－Will you go skiing with me this winter vacation?

－Well, it ________．

A．is all depending

B．is all depended

C．all depend

D．all depends

You can go out when you ________ your homework．

A．have finished

B．will finish

C．shall finish

D．had finished

I have the honor of ________ to have dinner there．

A．invite

B．being invited

C．be invited

D．have invited

Johnny, you ________ play with the knife; you ________ hurt yourself．

A．won’t; can’t

B．mustn’t; may

C．shouldn’t; must

D．can’t; shouldn’t

Robert is said ________ abroad, but I don’t know what country he studied in．

A．to have studied

B．to study

C．to be studying

D．to have been studying