In summer milk will quickly go bad _____it is put into a fridge.
| A．though | B．unless | C．because | D．once |
Thank you for _______my grandpa when I was away .
| A． looking after | B． look over |
| C． looking at | D． looking up |
How long have you lived here ?
________ ten years ago .
| A． Since | B． For | C． When | D． Which |
You’d better ________late next time .
| A． not to be | B．not be | C． won’t be | D． don’t be |
Our classroom is very dirty ,let’s _____it_______.
| A． tidy ; up | B． take ; up |
| C． pick up | D． put up |
Whose book is that ?
It _______belong to Linda .Look !Her name is on it .
| A． must | B． need | C．have to | D． can |