问题补充:
The boy is seriously injured. So he is supposed to hospital as soon as possible.
A. to be sent
B. to send
C. being sent
D. sending
答案:
A. to be sent
B. to send
C. being sent
D. sending
解析:考查词组:be supposed to do应当做…,he和send是被动关系,用不定式的被动,句意:男孩伤得很重,所以他应该尽可能快的被送进医院。选A。