He missed the early bus this morning .That was ______he was late for school.
A.why B.because C.if
—Mr. Hu, can you tell us how to learn swimming well?
—Sure. But remember we can learn nothing well _______ hard work.
| A．with | B．after | C．without | D．at |
You _______ wash your hands before meals. It is good for your health.
| A．may | B．can | C．have to | D．must |
It’s hot here. Please keep the windows _______.
| A．closing | B．open | C．closed | D．opened |
Sally sings pretty _______ and she is also _______ at dancing.
| A．well; well | B．good; good |
| C．good; well | D．well; good |
The summer holiday is coming. We’re going to have _______ holiday.
| A．a two-month | B．a two-months |
| C．two months | D．two-months |