You should ________ the flowers once a week.
| A．to water | B．water | C．watered | D．waters |
After a short rest, the soldiers keep on _________ till midnight.
| A．work | B．working | C．to work | D．to working |
_________ thing for us is studying hard.
| A．The more important | B．Most important | C．More important | D．The most important |
–I can’t stop smoking, doctor.
--For your health, I’m afraid you________.
| A．may | B．need | C．must | D．have to |
–- Why is Tom unhappy today?
-- He got______ points of all the boys.
| A．the most | B．more | C．the fewest | D．the least |
She is better at English than _________ in the class.
| A．any other student | B．the other student |
| C．the one of any other student | D．those of any other student |