— I’ve taken someone else’s green sweater by mistake.
— It ______ Harry’s. He always wears green.
| A．has to be | B．will be | C．mustn’t be | D．could be |
—Did you enjoy yourself last weekend, Tom?
—Yes, as you know, ______ birthday party went on in _____ most pleasant atmosphere.
| A．the; the | B．a; the | C．the; a | D．a; a |
—Tony said he could fix my bicycle, but I really doubt it.
—_______. He’s very good at this sort of thing.
| A．Don’t worry | B．I couldn’t agree more |
| C．Of course | D．A piece of cake |
This article may be some advice about how to _________ oneself in society.
| A．behave | B．believe | C．perform | D．operate |
The environmental problems in China may worsen if __________ unsolved.
| A．making | B．remained | C．keeping | D．left |
_____ cleaning the doghouse was the last thing I wanted to do, I did it with all my efforts.
| A．Although | B．As | C．As long as | D．Now that |