.From the classroom window we saw a huge snake _____ the yard.
#97380
A
crossing
B
cross
C
across
D
having crossed
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No matter how bright a talker you are, there are times when it is better ______ silent.
#91568
A
remain
B
be remaining
C
to remain
D
having remained
.----Who are those people gathering in front of the building? -----A group __________ itself the youth volunteers.
#96684
A
calling
B
calls
C
called
D
to be called
He went out to play football, leaving his homework _________.
#90331
A
to unfinish
B
to be unfinished
C
unfinishing
D
unfinished
I’m glad to see the rapid progress ______in science and technology in the past decade.
#96993
A
to make
B
making
C
made
D
having made
.—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