摘要：What do you have to do?

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What do you have to do when you’re ________home?

A.
in
B.
at
C.
at the
D.
for the

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What do you have to do to ________ the volunteer program?

A.
join in
B.
take part
C.
join
D.
join at

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What do you have to do ________ a League member?

A.
as
B.
by
C.
at
D.
in

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--What do you have to do now?
--I have to ________.

A.
carrying water
B.
carry waters
C.
carries water
D.
carry water

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What do you have to do to ________ the volunteer program?

A．join in

B．take part

C．join

D．join at

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