Cycling is highly __________ to people’s health and the environment.
| A．fashionable | B．beneficial | C．changeable | D．suitable |
I promise that she ___ get a nice present on her birthday.
| A．should | B．must | C．would | D．shall |
He ___ without saying good-bye to them, for he always has good manners.
| A．mustn’t have left | B．may not have left | C．shouldn’t have left | D．can’t have left |
. He was not brave. He ____ jump down from the roof.
| A．dare not | B．dared not | C．dares not | D．dare not to |
—Is your mother still a teacher? —______.
| A．Yes, she was | B．She didn’t use to | C．No, but she used to | D．No, but she used to be |
—Shall I go and buy two more bottles of beer?
—No, I’ve already bought twenty. That ___ be enough for us two.
| A．can | B．may | C．ought to | D．might |