Tell Mary that there"s someone_______for her at the door.A．waiting B．waitedC．wai

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Tell Mary that there"s someone_______for her at the door.

A．waiting

B．waited

C．waits

D．to wait

答案

解析

略

举一反三

There is a big dog_______to a fence outside the house.

A．tying

B．tied

C．to tie

D．ties

题型：不详难度：| 查看答案

The_______waiter came up to us and said,"You are welcome."

A．smiling

B．smiled

C．smile

D．to smile

题型：不详难度：| 查看答案

_______the early train,you"ll have to get up early and rush in a taxi.

A．Catching

B．Caught

C．To catch

D．Catch

题型：不详难度：| 查看答案

There, in the corner, sat three girls,_______.

A．sew

B．were sewing

C．to sew

D．sewing

题型：不详难度：| 查看答案

Whether it will do us harm remains_______ .

A．seen

B．seeing

C．being seen

D．to be seen

题型：不详难度：| 查看答案