－What do you think of the book?
－Oh, excellent. It’s worth ______ a second time.
| A．to read | B．to be read | C．reading | D．being reading |
I followed the man in a blue jacket thirty meters ______ me and watched him enter the hall.
| A．apart from | B．ahead of | C．in the front of | D．at the back of |
My mom, who didn’t allow me to smoke, ______ when she caught me smoking.
| A．was over the moon | B．was as busy as a bee |
| C．was all ears | D．flew off the handle |
—Jack is not in the office at the moment
—Oh, he ______ those who are going to take the driving test in an hour.
| A．can have instructed | B．must have instructed |
| C．must be instructing | D．will be instructing |
From what she has done we can predict that she is ______enough to make up her own decision and behave in a proper way.
| A．positive | B．severe | C．mature | D．admirable |
Never______ such a difficult problem. It took me almost half an hour to work it out.
| A．had I come across | B．I had come across |
| C．did I come across | D．I did come across |