There are many ___ jewels in the museum.
A. valued
B. invaluable
C. valueless
D. worthy
The rising crime rate is ___ major concern of ___ society.
A.the, the
B.a, \
C.a, the
D.\, the
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
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
微信支付 
支付宝支付