The writer has to work more hours and _______ now.
A. receives less money
B. receives more money
C. receives no money
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We reached the station ________ the train had left.
A. before
B. after
C. until
Your grandmother____________ to the hospital at once.
A. must send
B. must be sent
C. must to be send
The writer prefers _______.
A. swimming to making money
B. making money to swimming
C. riding a bike to swimming
随着收入和价格的变化,消费者的均衡也发生变化,假如在新均衡下,各种商品的边际效用均低于原均衡状态的边际效用。这意味着( )。
A. 消费者生活状况有了改善
B. 消费者生活状况恶化了
C. 消费者生活状况没有变化
D. 无法判断