When he looked up，he suddenly found himself ______by a group of teenagers，____looked at him anxiously.
A．to be surrounded；which
B．surrounded；who
C．be surrounded；who
D．having been surrounded；which
—I’m thinking of the test tomorrow. I’m afraid I can’t pass this time.
—________！I’m sure you’ll make it.
A．Go ahead B．Good luck
C．No problem D．Cheer up
I have devoted four weekends to writing papers and now I feel I ________a rest.
A．deserve B．preserve C．perceive D．receive
Some people ________cruel experiments on animals ________science.
A．make；by the name of B．carry；in the name of
C．make；in the name of D．carry out；by the name of
—Did you remember to give Mary the money you owed her?
—Yes. I gave it to her ________I saw her.
A．while B．the instant C．suddenly D．once
_____ to finish this composition in such a short time is a mystery.
A．How did he manage B．What did he manage
C．How he managed D．What he managed
