—I’d like to invite you to my birthday party this evening.

—Thanks, but ____ I’ll have time I’m not sure at the moment.

A. while       B. whether        C. if       D. when

 To my surprise, the game drew only a few ____ participants and spectators yesterday.

    A. hundred      B. hundreds       C. hundres of       D. hundreds of

 John waited at the bus-stop for nearly half an hour _____ the bus finally arrived .

         A. when B. as        C. before         D. while

____running , learning English needs will.

         A. As with        B. As to   C. As for           D. As if

Ten years had passed. I found she had _______.

A. a few white hairs      B. a little white hair

C. some white hair D. more fifty hair

“It’s $500, but that is my last offer.” “OK, it is a ________.”

A. cost    B. price

C. reward       D. deal

“Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.”

A. after   B. unless

C. until   D. when

He gets fifty thousand pounds a year ______I get twenty million, which makes me upset.

A. since       B. while              C. when              D. as

Luis is____a lot of stress right now because he has been addicted____drugs.

   A. on; to   B. under; to    C. with; into     D. in; in

A medical team____150 doctors and nurses went to WenChuan torescue the trapped.

  A. was made up of  B. consisted of    C. made of     D. made up of