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---Why does Tommy look unhappy ? --- Because his teacher makes him _______ the classroom all by himself .
#50728
A
to clean
B
clean
C
cleans
D
cleaning
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Could you please not ____________ here?
#50841
A
smoking
B
smoke
C
to smoke
D
smoked
—Do you want ____for your son? —Yes, I do.
#48861
A
to buy any books
B
buy any books
C
to buy some books
D
buy some books
Thank you ____ me with my homework.
#49711
A
for helping
B
for help
C
to help
D
to helping
 How happy we were        each other ！
#49780
A
to see
B
seeing
C
saw
D
have seen
It’s good ______ English every day.
#48442
A
to read
B
read
C
reading
D
for reading