Question

—The old man is ill. He ________ to the hospital at once. --Don’t worry. A doctor _________to .

—The old man is ill. He ________ to the hospital at once. --Don’t worry. A doctor _________to come already. A．must be sent , has asked B．must send, have asked C．must be sent, has been asked D．must send, have been asked

Answer 1

C

试题分析：句意：---这个老人生病了他必须马上被送到医院，----不要担心，医生已经被叫来了。 Must be done 表示含情态动词的被动语态，完成时的被动语态have been done 结构，根据题意可知选C