—Do you know when he back tomorrow?
—Sorry, I don’t know. When he back, I will tell you.
| A．comes; comes | B．comes; will come |
| C．will come; comes | D．will come; will come |
Sam is a little weak in English and he has _____ what the teacher says in class.
| A．difficult to understand |
| B．difficult understanding |
| C．difficulty to understand |
| D．difficulty understanding |
______ great fun they had singing and dancing last Sunday night!
| A．How a | B．What a | C．How | D．What |
Not only you but also he ________ to my birthday party.
| A．have been invited | B．has been invited |
| C．are invited | D．invited |
The floor requires_________.
| A．to wash | B．to be washing | C．washing | D．Washed |
I think your advice is of great value to me and it’s well worth ________.
| A．to take | B．taking | C．to give | D．Giving |