We must do everything we can _________ our earth clearer and safer.
#49701
A
made
B
to making
C
make
D
to make
推荐题目
It’s very easy for us ________asleep with relaxing music going on when we’re tired.
#49356
A
fall
B
falling
C
to fall
D
fell
Guo Degang is a famous crosstalk performer. He always makes people __________.
#48540
A
laughs
B
laugh
C
laughing
D
to laugh
This river is too wide for the swimmers _________.
#48977
A
to swim
B
to swim across
C
to swim in
D
swimming