If you want to make yourself _____, you should speak clearly and slowly.
#48958
A
understand
B
understood
C
to understand
D
understanding
推荐题目
Don’t throw away the waste paper. It needs        so that it can be reused.
#48488
A
to destroy
B
destroying
C
to collect
D
colleting
If people keep _______ down the forests, they will have nowhere _______.
#50334
A
to cut, to live
B
cutting, to live in
C
to cut, to live in
D
cutting, to live