The zoo will have to close ________ the local government agrees to give extra money.

A. until            B. when         C. unless       D. if

The research is so designed that once________nothing can be done to change it.

A. begins B. having begun

C. beginning D. begun

Sally worked late in the evening to finish her report ________ her boss could read it first next morning.

A. so that     B. because

C. before      D. or else

_______,his idea was accepted by all the people at the meeting.

A.Strange as might it sound

B.As it might sound strange

C.As strange it might sound

D.Strange as it might sound

—Did you return Fred’s call?

—I didn’t need to ____ I’ll see him tomorrow.

A. though           B. unless

C. when             D. because

Many people wrote articles on ___Liu Xiang had failed to compete in the event .

  .A. why       B. what         C. who      D. that

People traveling long distances frequently have to decide ______they would prefer to go by land, sea or air.

A．which               B．how             C．why            D．whether

--- The patient looks much better.     is it that has made him      he is today?

--- Perhaps the special medicine and his family’s patient care.  

A．What; that   B．That; that   C．What; what   D．What; what

Students are always interested in finding out _______ they can go with a new teacher.

A. how far        B. how soon       C. how often      D. how long

________ is reported in the newspaper, talks between the two countries are making progress. A. It    B. As    C. That    D. What