－Must I make the writing plan now? － No, you______. You______ finish it tomorrow.
| A．needn’t, must | B．don’t have to, may | C．mustn’t, may | D．mustn’t, must |
—Must we keep the room_______ all the time?
—No, you don’t have to.
| A．cleaning | B．cleaned | C．to clean | D．clean |
—He plays basketball so well! Who taught _______?
—He learnt it by _______.
| A．him; him | B．himself; himself | C．him; himself | D．himself; him |
—_______ can I keep the books?
—Two weeks.
| A．How long | B．How often | C．How far | D．How soon |
My mother often tells me _______ my classmates when they need.
| A．help | B．to help | C．helping | D．helps |
Do you prefer _______?
| A．skate | B．skates | C．skating | D．skated |