AIDS is said        the biggest health challenge to both men and women in that area over the past few years.

A. that it is         B. to be         C. that is has been      D. to have been

 I won’t tell the student the answer to the math problem until he      on it for more than an hour.

A. has been working  B. will have worked  C. will have been working   D. had worked

 fired, your health care and other benefits will not be immediately cut off.

A. Would you be     B. Should you be      C. Could you be       D. Might you be

 I’m certain Davel’s told you his business troubles.        , it’s no secret that he owes a lot of money to the bank.

A. However          B. Anyway          C. Therefore            D. Though

 I was wondering if we could go skating on the weekend.

――　　　　 good.

A. Sound            B. Sounded         C. Sounding          D. Sound

 Although the wind has        , the rain remains steady. so you still need a raincoat.

A. turned up         B. gone back       C. died down         D. blown out

 As I grew up in a small town at the foot of a mountain, the visit to the village        scenes of my childhood.

A. called up         B. called for          C. called on          D. called in

 The building around the corner caught fire last night. The police are now        the matter.

A. seeing through      B. working out      C. looking into       D .watching over

 It’s already 10 o’clock. I wonder how it      that she was two hours late on such a short trip.

A. came over         B. came out          C. came about       D. came up

 At the meeting they discussed three different        to the study of mathematics.

A. approaches            B. means           C .methods          D. ways