It’s possible_____ the old. We should often do so.
| A．of us to help | B．for us to help |
| C．of us helping | D．for us helping |
I’ve left my keys in the meeting room . Please fetch ________ for me .
| A．one | B．ones | C．it | D．them |
It’s very kind _________ you to give your seat to me .
| A．for | B．of | C．to | D．on |
Listen ! Peter is singing in the classroom . It _____ be him . He has gone back to his hometown .
| A．must | B．mustn’t | C．may not | D．can’t |
How many times have you ________ to Shanghai ?
| A．go | B．gone | C．been | D．be |
Please tell me ___________ .
| A．what is your favorite subject | B．why you like English best |
| C．how is your mother | D．how old are you |