He was busy writing a story, only ______ once in a while to smoke a cigarette.
#4946
A
to stop
B
stopping
C
to have stopped
D
having stopped
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_________ get a complete picture, ________ information is needed.
#4717
A
So as to; farther
B
So as to; further
C
In order to; farther
D
In order to; further
If you keep_____,you can sit on _____side of the boat.
#4670
A
quite,either
B
still,either
C
calm,each
D
silent,both