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1.There are many ___ jewels in the museum.
A.valued
B.invaluable
C.valueless
D.worthy
2.The rising crime rate is ___ major concern of ___ society.
A.the, the
B.a, \
C.a, the
D.\, the
3.You see the lighting ___ it happens, but you hear the thunder later.
A.the instant
B.on the instant
C.for an instant
D.in an instant
4.He resented ___ to wait. He expected the minister ___ him at once.
A.to be asked, to see
B.being asked, to see
C.to be asked, seeing
D.being asked, seeing
5.I am so tired now that I want to ___.
A.turn in
B.turn over
C.turn up
D.turn down
