.—English has a large vocabulary, hasn’t it?--Yes._____ more words and expressions and you will find it easier to read and communicate.
#96759
A
Knowing
B
Know
C
To know
D
Knew
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Wang Hua is said ____a new computer program recently, but I don’t know when she will finish it.
#97335
A
to design
B
to be designing
C
to have been designing
D
to have designed
___ the room, the nurse found the tape-recorder ___. 
#95593
A
Entering; stealing
B
Entering; gone
C
To have entered; being stolen
D
Having entered; to be stolen
Each button, when ____, provides a piece of beautiful music.
#88692
A
clicked
B
having clicked
C
clicking
D
being clicked