--- Why are you taking a bag with you?
--- I’m going to buy something. The supermarkets don’t _____ free plastic bags to shoppers to protect the environment.
| A．take | B．show |
| C．provide | D．carry |
---If there are _______ people driving, there will be _______ air pollution.
---Yes, the air will be fresher.
| A．less; less | B．less; fewer |
| C．few; fewer | D．fewer; less |
While I _______ down the street, I _______ my classmates.
| A．was walking; met | B．walked; met |
| C．was walking; was meeting | D．walked; was meeting |
If it _______ tomorrow morning，we’ll go out for a picnic．
| A．won’t rain | B．doesn’t rain |
| C．isn’t raining | D．isn’t going to rain |
--- _______ I come back before 6 o’clock?
---No，you _______．But you _______ be back later than 7 o’clock．
| A．Need；must；must | B．May；mustn’t；can’t |
| C．Can；can’t：can’t | D．Must；needn’t；can’t |
---What’s up? ---There is _______ with my computer. It doesn’t work.
| A．nothing wrong | B．anything wrong |
| C．everything wrong | D．something wrong |