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 --- I really don’t know how ________  this problem.--- Let me see.
#49068
A
to do with
B
to deal with
C
doing with
D
dealing with
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Neil Armstrong is the first man         .
#48796
A
walk on the moon
B
walk on moon
C
to walk on the moon
D
to walk on moon
—What club do you want ___________?—A chess club, please!
#48809
A
join
B
to join
C
joining
D
joined
Could you please ________ such a thing again?
#50730
A
not to do
B
don’t do
C
not doing
D
not do
—We should do what we can ________ the endangered animals.—Yes, it’s our duty_________ them.
#48378
A
save; to protect
B
save; protect
C
to save; protect
D
to save; to protect
My brother is always the first_______ to school.
#50435
A
to get
B
getting
C
to reach
D
reaching