题目内容

I find ____________ to make some changes.

A. it is quite necessary
B. that is quite necessary
C. it quite necessary
D. quite necessary

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A solar day is the length of time _________ the Earth to revolve once around the sun.

A. takes
B. takes it
C. it takes
D. taking

___________ from the sun _________ we get light and heat.

A. It is ... that
B. It was ... that
C. It must be ... that
D. It can be ... that

-- Who is making so much noise?-- ________ must be the children.

A. They
B. There
C. These
D. It

-- When can we come to visit you?-- Any time you feel _________.

A. one
B. like it
C. so
D. for it

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