Birds' singing is sometimes a warning to other birds ______ away.
#94926
A
to stay
B
staying
C
stayed
D
stayed
推荐题目
There was a terrible noise _______the sudden burst of light.
#98377
A
followed
B
following
C
to be followed
D
being followed
The high-speed rail _________Xiamen with Longyan is to open on June 30th.
#94589
A
linking
B
links
C
linked
D
to link
Mr. Smith suggested the student ___ to be given a prize.
#91610
A
refer
B
referred
C
referring
D
would refer
With the couple________in a nearby town，the house seems pretty empty most of the time.
#88728
A
work
B
to work
C
working
D
worked