31. --______ one and a half days enough for the painting to be finished?
--I don’t think it’s enough and only after _________ go on with it.
| A．Is; will he recover he can | B．Are; he recovers can he |
| C．Are; he recovers he can | D．Is; he recovers can he |
He is never allowed ________ in the room.
| A．to smoke | B．smoking | C．smoked | D．to be smoked |
They want to know ________ do to help us.
| A．what can they | B．how they can |
C．what they can | D．how can they |
— I must have a balanced diet. I carry too much fat.
— ________.
| A．Congratulations | B．Good idea | C．Good luck | D．Don’t mention it |
— Mr White has been working all the morning with no rest.
— He is a(n) ________ man. He never looks tired.
| A．energetic | B．powerful | C．lovely | D．attractive |
Mary is being punished（惩罚） by the headmaster. That was______ she broke the school rules.
| A．why | B．because of | C．the reason why | D．because |