Judging from his______ expression, this problem must be quite ______.
_____ computer has been proved to be _____ important aid in classroom teaching.
第二部分英语知识运用(共两节,满分45分)单项填空(共15小题;每小题1分,满分15分)从 A、B、C、D 四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。—Would you mind if I sat here?— Sorry. _____ I'm expecting a friend.A. Of course not. B. I'd rather you didn't C. Go ahead. D. Why not?
—Sandra failed to pass the exam. — __________ ? Nobody works harder than she does.
—You never think of others ! You kept me waiting for two hours. —I’m sorry that you _________ think so.
No one was sure exactly__________ he wanted