Don’t promise anything ________ you are one hundred percent sure.A．ifB．afterC．wh

题型：不详难度：来源：

Don’t promise anything ________ you are one hundred percent sure.

A．if

B．after

C．when

D．unless

答案

解析

试题分析：if是否，如果；after在……之后；when当……时；unless除非，如果不。句意：如果你不是百分之百的确定，不要承诺任何事情。故选D。

举一反三

Professor White has written some short stories, but he is _____ for his plays.

A．more-known

B．the most- known

C．better- known

D．the best- known

题型：不详难度：| 查看答案

--- Did you watch _______ Women’s 500-metre Fast Skating Final last night?
--- Yes, it was really _______ wonderful match.

A．a, a

B．the, a

C．a, the

D．the, the

题型：不详难度：| 查看答案

--- Is the new bicycle ________? --- No, It belongs to ________.

A．her, me

B．her, mine

C．hers, me

D．hers, mine.

题型：不详难度：| 查看答案

I think we should give him another chance _______ he has made some mistakes.

A．though

B．unless

C．if

D．until

题型：不详难度：| 查看答案

--- I can’t afford the white sweater. Can you show me another one?
--- What about the orange one? The price is a little ________.

A．cheaper

B．higher

C．lower

D．more expensive

题型：不详难度：| 查看答案