Mr. Han, my neighbor, is always helping those who are in trouble without expecting anything __________.
#26800
A
in turn
B
in return
C
in detail
D
in addition
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______I used to go mountain—climbing every summer .
#28699
A
at a time
B
at one time
C
At times
D
At the same time
--Tom is very stupid. He fails in every exam. --_____, he is more lazy than stupid.        
#27336
A
On the other hand
B
On one condition
C
In my opinion
D
In other words