题目内容

The policemen were told to be alert() the dangers they were facing.
A to
B in
C on
D at

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Those pictures reveal() us a wonderful world under water.
A on
B at
C to
D in

He owed his success to luck more than()capacity.
A on
B to
C in
D at

You must summon up all your()to meet the danger.
A courage
B attention
C confidence
D view

Joan and Jane are twins,but they have few interests() .
A in order
B in turn
C in general
D in common

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