题目内容

4.Tell Mary that there's someone_______for her at the door.

A. waiting
B. waited
C. waits
D. to wait

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5.There is a big dog_______to a fence outside the house.

A. tying
B. tied
C. to tie
D. ties

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

A. smiling
B. smiled
C. smile
D. to smile

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

A. Catching
B. Caught
C. To catch
D. Catch

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

A. sew
B. were sewing
C. to sew
D. sewing