Some of my friends are interested in science, but none of them can tell ________.
| A．when UFOs appeared next time |
| B．that horses know the way or not |
| C．where was this kind of plant found |
| D．how elephants communicate |
— Mum, must I wash the dishes right now?
— No, you ______.
| A．shouldn’t | B．wouldn’t |
| C．mustn’t | D．needn’t |
— What will you do tomorrow?
— We’ll have a picnic if it ______ fine.
| A．is | B．was | C．will be | D．has been |
Paul and I tennis yesterday. He did much better than I.
| A．play | B．will play |
| C．played | D．are playing |
We have a lovely room. It’s one of in the hotel.
| A．nice | B．nicer |
| C．nicest | D．the nicest |
There are no buses, you’ll have to walk.
| A．so | B．or | C．but | D．for |