单项选择题

Scientists and economists (believe) that human being (can never) (use away) all the (mineral) resources on Earth.

A. believe
B. can never
C. use away
D. mineral
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单项选择题
Paul suggested that (they meet) (in the front) of the school gate (at) one o'clock (Friday afternoon).
A. they meet
B. in the front
C. at
D. Friday afternoon
单项选择题
Smith sold (most of) his (belongings). He has hardly (nothing) left (in) the house.
A. most of
B. belongings
C. nothing
D. in
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