As we all know, one unfortunate outcome of Internet use is that it damages people’s ability _______ normal lives.
| A．living | B．to live |
| C．lived | D．to be lived |
My doctor advised me to reduce the amount of sugar ______ to the milk I drink.
| A．add | B．to add | C．adding | D．added |
---I haven’t got the reference book yet, but I’ll have a test on the subject next month.
---Don’t worry. You ______ have it by Tuesday.
| A．could | B．shall | C．must | D．may |
---What’s that unpleasant noise?
---Oh, the road before the main gate ______.
| A．is repairing | B．is being repaired | C．is repaired | D．has been repaired |
You’ve failed to do what you ______ to and I’m afraid the teacher will blame you.
| A．will expect | B．will be expected | C．expect | D．were expected |
It is difficult for us to learn a lesson in life ______ we’ve actually had that lesson.
| A． until | B．after | C．since | D．when |