--- What are you doing?---I’m _________ the Internet.
#52470
A
looking at
B
looking through
C
looking up
D
look after
推荐题目
 —Fire is very useful to human! —Yes, especially in winter a fire _____________warm.
#62971
A
used to keep
B
can be used to keep
C
is used to keeping
D
was used to keeping
 -What is the __________ of the polar bear?-It __________500 kg.
#52205
A
weight, weigh
B
weigh, weights
C
weight, weighs
D
weight, weigh