—Can I help you?
—__________. I want a pair of shoes for my son.
| A．Yes, please | B．No, you can’t |
| C．Yes, you can. | D．Sorry, you can’t. |
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 |