He is sweating heavily. He _______ weightlifting for a long time.
| A．could have practiced | B．can practice | C．must have practiced | D．might practice |
She ____ have left school, for her bike is still here.
| A．can’t | B．mustn’t |
| C．needn’t | D．shouldn’t |
They are ____ different sizes, shapes and materials, but they are exactly the same _____.
| A．/; in weight | B．of; in weight |
| C．in; of weight. | D．of; weights |
When you are older you can watch _____ program you like.
| A．however | B．whenever |
| C．whichever | D．whatever |
____ you eat the correct foods ____ be able to keep fit and stay healthy.
| A．Only if; will you | B．Only if; you will |
| C．Unless; will you | D．Unless; you will |
According to our school rules, no student ____ be permitted to carry mobile phones in class.
| A．will | B．must | C．may | D．shall |