Mike likes to watch the birds _________ in the sky.
#52089
A
flys
B
flying
C
flies
D
fly
推荐题目
My cousin was born in China, but ____in Australia.
#52068
A
picked up
B
gave up
C
grew up
D
took up
Most of _____ fly to the south when winter _______ .
#54547
A
they , comes
B
them , come
C
them , comes
D
them , came
If we         now to protect the environment, we’ll live to regret it.
#53390
A
hadn't acted
B
haven't acted
C
don't act
D
won't act