He didn’t go to school yesterday ________ he was ill.
| A．because | B．because of | C．if | D．so |
---Who helped you clean the classroom yesterday?
---_______. I did it all by myself.
| A．Someone | B．Anyone | C．Nobody | D．Everybody |
I remember ______ the math problem ______.But I can’t remember it’s answer.
| A．working ;out | B．to work ;out |
| C．working ;with | D．to deal ;with |
It’s said that _____ of the water around the world _____ polluted.
| A．two third ;has | B．two thirds ;have |
| C．two third ; are | D．two thirds ;is |
---May I have a look at your plan for the robot ?
----Sorry ,I’ve _____ it at home .
| A．missed | B．forgotten | C．left | D．lost |
----Which of the two pairs of shoes will you take ?
----I’ll take _____ .They are too small for me.
| A．both | B．all | C．either | D．neither |