. ___________ the letter, he went out to post it.A．WritingB．Being writingC．

题型：不详难度：来源：

. ___________ the letter, he went out to post it.

A．Writing

B．Being writing

C．Having written

D．Written

答案

解析

略

举一反三

. Don"t you remember ___________ ?

A．seeing the man before	B．to see the man before
C．saw the man before	D．to have seen the man before

题型：不详难度：| 查看答案

. People couldn"t help ___________ the foolish emperor in the procession.

A．laugh at

B．to laugh at

C．laughing at

D．laughing on

题型：不详难度：| 查看答案

. We’re looking forward ___________ the photo exhibition.

A．to visiting

B．to visit

C．to having visited

D．visiting

题型：不详难度：| 查看答案

. The girl ___________ under that tree is my sister.

A．sitting

B．sits

C．is sitting

D．sat

题型：不详难度：| 查看答案

. This sentence needs ___________ .

A．a improvement

B．improve

C．improving

D．improved

题型：不详难度：| 查看答案