The problem requires ______.
#97533
A
studying with great care
B
to study carefully
C
to be studied without carelessness
D
taking great care of studying it
推荐题目
 The little baby, if _________ by other people, will wake up and cry.
#89737
A
disturbing
B
disturbed
C
to be disturbed
D
being disturbed
That's the best way to ________ into the dangerous area.
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A
get people get
B
stop people to get
C
keep people getting
D
prevent people getting