单选题 The course normally attracts 20 students per year,____up to half will be from Orient.

单选题 Catching crabs in the bay is profitable, but ______ for bass in the river is more relaxing.

单选题 The hours ______ the children spend in their one-way relationship with television people undoubtedly affect their relationships with real-life people.

单选题 ______ receiving financial support from family, community or the government is allowed, it is never admired.

单选题 Fast delivery is important. Now our customers can ______ their orders (订货) within 2 days.

单选题 ______ much is known about what occurs during sleep, the precise function of sleep and its different stages remain largely in the realm of assumption.

单选题 When checking in, you need to show your ticket and ______.

单选题 Finding a good job and ______ were Larry's main goals.

单选题 Smith never went to see his wife again, ______ to apologize.