问题
You can watch TV ______, but you can’t watch it ______ a long time.
A:one, at
B:one, for
C:first, for
D:first, at
B:one, for
C:first, for
D:first, at
正确答案是：
同类题型
Just as Professor Scotti often______ it, success is ninety-nine percent mental attitude.
The problem is __________ for Tom to work out.
Is this the watch you wish to _____?
You _______ seeadentistwhenyouhaveatoothache.
Who’s the woman in red ? Is it Mrs. White?—It be her. She went to Beijing yesterday.