Question

This August will be very precious for graduates by which time they _________into a university.

1. A.
   will be admitted
2. B.
   will have admitted
3. C.
   have been admitted
4. D.
   will have been admitted

Answer 1

D
试题分析：考查时态及语态的用法。主句中will是表示将来时，在从句中有by which time可以看出从句谓语动词应该用将来完成时，又因为they与admit之间是被动关系故选D；将来完成时表示将来某个时间之前已经完成的动作，常与by+将来的时间；这里指八月以前学生已经被大学录取了。一般将来时指将要发生的动作与将来的时间状语连用。
考点：考查时态及被动语态的用法。
点评：本题难。命题者在于考查学生的将来完成时与一般将来时的区别，学生误选A，认为是将来时而忽略了by which time的这个时间状语。
即学即练：Pick me up at 8 o'clock,I  __________ breakfast by then.
A. will have            B. will have had   C. have             D. have had
解析：B句意：早上8点钟你来接我，到时我已经吃完早饭了。