(2013·高考天津卷)No one ________be more generous; he has a heart of gold.
#62472
A
could
B
must
C
dare
D
need
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Her sister ____ a taxi driver. Now she works for a charity.
#77672
A
is
B
were used to being
C
is used to being
D
used to be
 “Not having returned home yet, _________”, his father said to the police.
#63543
A
his mother got worried
B
his mother must be worried
C
I think he is missing
D
he must have got into some trouble.