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She always watches her son ________ the road every morning, or she will feel worried.
#48963
A
crossing
B
cross
C
to cross
D
to crossing
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 Let that boy_______some dessert.
#49854
A
have
B
has
C
to have
D
to has
—It’s necessary ____ our environment(环境).  —I agree with you.
#50553
A
protect（保护）
B
protecting
C
to protect
D
protects
Would you mind ______ louder?  I can’t hear you clearly.
#49468
A
speaking
B
spoke
C
to speak
D
speaks
Thank you for ________ me with my English.
#48832
A
helping
B
helps
C
are helping
D
help
His mother wants him ________ good food.
#50352
A
eat
B
to eat
C
eating
D
eats