Thank you for all your hard work last week. I don’t think we _____ it without you.
| A．can manage | B．could have managed |
| C．could manage | D．can have managed |
I hate _____when people talk with their mouths full.
| A．it | B．that | C．this | D．them |
It worried her a bit ______her hair was turning grey.
| A．while | B．if | C．that | D．for |
_____ is a fact that English is being accepted as an international language.
| A．There | B．This | C．That | D．It |
_______ you don't like him is none of my business.
| A．What | B．Who | C．That | D．Whether |
_______ you have done might do harm to other people.
| A．That | B．What | C．Whether | D．How |