1. They ________ in spite of the extremely difficult conditions.
A) carried out
B) carried off
C) carried on
D) carried forward

2. Mrs. Brown is supposed ________ for Italy last week.
A) to have left
B) to be leaving
C) to leave
D) to have been left

3.My camera can be ________ to take pictures in cloudy or sunny conditions.
A) treated
B) adjusted
C) adopted
D) remedied

4. Children who are over-protected by their parents may become ________.
A) hurt
B) damaged
C) spoiled
D) harmed

参考答案及解析：

1.carry out 执行，实现，后面要加宾语，比如：He will carry out his plan.他要执行他的计划。Carry out a new policy.
实行一项新政策，carry off 夺去...的生命, 获得, 成功对付， carry on继续开展, 坚持，carry forward发扬, 使进行; 推进, 发展(业务等)。所以正确答案应该选择C。
2. 对过去情况的猜测应该用完成时。leave 当“离开”讲时是不及物动词，不能用被动语态，所以正确答案应该选择A。
3．treat款待，对待，adjust调整, 调节, 校准, 使适合，adopt采用, 收养，remedy治疗, 补救, 矫正。所以正确答案应该选择B。
4．hurt伤痛, 伤害，damage招致，损害，spoil宠坏, 溺爱，harm伤害, 损害。所以正确答案应该选择C。