Five athletes competed ________ the gold medal ________ each other ________ the 100-meter dash．

A．to; with; in

B．at; against; by

C．of; at; because

D．for; with; in

－The boss said we had only three days to finish the work．

－Don't worry．We have already ________ two thirds of it．

A．got down

B．got through

C．given in

D．given away

With his last jump he ________ the world record．

A．was equal to

B．equalled

C．won

D．kept

________ your letter, I would have started off two days ago．

A．If I received

B．Should I received

C．If I could have received

D．Had I received

________ China's reform(改革)and opening up in late 1978, its quick development has aroused worldwide attention．

A．When

B．As

C．While

D．Since

As a matter of fact, the bad weather meant ________ the rocket launch for 48 hours．

A．delaying

B．delayed

C．to delay

D．having delayed

In the ________ of most people, there will be a good harvest this autumn．

A．opinion

B．look

C．thought

D．idea

________ I went to Zhangjiajie, I was shocked by its beauty．I'd say it was the most beautiful place I saw ________．

A．The first time; for the first time

B．For the first time; the first time

C．The first time when; at first

D．A second time; for the second time

He knows ________ English that he can't even teach ________．

A．so little; so little a child

B．such little; such little children

C．so little; so little children

D．such little; such a little child

When ________, the museum will be open to the public next year．

A．completed

B．completing

C．being completed

D．to be completed