Some pictures of the river brought the days back to the old ________ they swam in it.
A. when
B. that
C. who
D. where
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The man showed us so heavy a stone ________ no man can lift.
A. that
B. as
C. which
D. what
He stayed there for quite a long time, during ________ time he learned much spoken English.
A. that
B. this
C. which
D. same
Fill in the blanks with the words or expressions given below. Change the form where necessarey.
请选择下列乐器哪个发出是乐音。
A. 鼓
B. 钹
C. 钢琴
D. 小军鼓
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