“It’s twelve o’clock, I think I must be off now.” “Oh, really? I ______ it at all.”
Her suggestion that the first six units of the book _______ wasn’t paid much attention to.
It is important that he _______ placed in an appropriate job.
I would love _______ to your birthday party last night, but I had to attend an important meeting.
Since you have made such good preparations,there _______ be any problem about passing the coming exam.
My new novel has disappeared.Who _______ have taken it?