It has been proved______eating vegetables in childhood helps to protect you against serious illnesses in later life.
| A．if | B．because | C．when | D．that |
I don't believe we've met before, I must say you do look familiar.
| A．therefore | B．although |
| C．since | D．unless |
It is by no means clearthe president can do to end the strike.
| A．how | B．which |
| C．that | D．what |
"Life is like walking in the snow", Granny used to say, "because every step”
| A．has shown | B．is showing |
| C．shows | D．showed |
Sarah looked atfinished painting withsatisfaction.
| A．不填；a | B．a; the | C．the; 不填 | D．the; a |
---Which one of these do you want?
--- . Either will do .
| A．I don't mind | B．I'm sure |
| C．No problem | D．Go ahead |