We can never expect bluer sky unless we create less polluted world.
| A．a; a | B．a; the | C．the; a | D．the; the |
—Oh, help! The pan is on fire!
—___________. I can handle it.
| A．Take it easy | B．Stop shouting | C．Help yourself | D．You bet |
Tom ____his homework yesterday, because he was in hospital all day.
| A．can’t finish | B．couldn’t finish | C．couldn’t have finished | D．mustn’t finish |
--- It is four years since I lived in shanghai.
---________?
| A．How long have you been there |
| B．Are you used to living there |
| C．Where have you been living now, please |
| D．Are you going to stay there longer |
I don’t know ____________.
| A．how much the population in Beijing is |
| B．what is the population of Beijing |
| C．how much is the population in Beijing |
| D．what the population of Beijing is |
I ______ this book for two weeks. I have to return it now.
| A．have borrowed | B．have kept | C．have lent | D．have returned |