Pollution is a serious problem. Scientists have _____ some good ways to save it.
#54132
A
come up with
B
come on
C
come out
D
come up
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The fire was finally________in Jilin on June 3.Unfortunately,119 people lost their lives.I hope the accident like this won’t happen again．
#52208
A
put out
B
put away
C
put up
D
put on
–Where are your parents?–They ___________ on the ground.
#61302
A
are lieing
B
lie
C
are lying
D
are liing
Millie is getting on well with her friends but she is a little selfish _____.
#55113
A
in time
B
on time
C
at times
D
at a time