The tourist is prevented from entering a country if he does not have ________ passport.
A. efficient
B. effective
C. operative
D. valid
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Everything of ________that she possessed were stolen by a thief.
A. price
B. cost
C. value
D. expense
We watched as the plane ________behind the clouds.
A. lost
B. vanished
C. escaped
D. flew
Nowadays, people in the city enjoy a ________ of recreational(娱乐) life.
A. variety
B. range
C. extent
D. variation
The hopes, goals and fears ________ widely between men and women, the rich and the poor, the old and the young.
A. alter
B. shift
C. transfer
D. vary