问题

It is obvious to the students ______ they should get well prepared for their future.[ ]

A: as
B: which
C: whether
D: that

正确答案是：

同类题型

You can not becareful when you are drivring a car.

At last, my dream has come _________.

单项选择（每题1分）—Look, John’s fallen asleep at work!—Oh, he must have _____ late last night.

How nice the music sounds!— It does! The peaceful music will make you feel .

These grapes look really beautiful. — They _______! See the price $3.99 a pound. Very expensive, aren’t they! [ ]