Many of your classmates dislike having to stay up late doing their lessons, _____?
| A．do they | B．have they | C．don’t they | D．haven’t they |
This problem may lead to more serious ones if ____ unsolved.
| A．making | B．remained | C．keeping | D．left |
I ____ you, but I didn’t think you would listen to me.
| A．could have told | B．must have told | C．should tell | D．might tell |
If you live in the country or have ever visited there, ____ are that you have heard birds singing to welcome the new day.
| A．situations | B．facts | C．dances | D．possibilities |
——Will $200 ____ the cost of the damage?
——I’m afraid not. I need at least $100 more.
| A．do | B．include | C．cover | D．afford |
——Would you mind giving your advice on how to improve our business management?
——if you make ____ most of the equipment, there will be ____ rise in production.
| A．不填；不填 | B．the；a | C．不填；a | D．the；不填 |