—Excuse me, but can I sit here?
—_________.The man who sat here will he hack soon.
| A．Yes, please | B．You're welcome |
| C．No problem | D．You'd better not |
Each of the club members ________ready to help those who were in trouble.
| A．is | B．are | C．was | D．were |
Bob often says that swimming is _____________ than hiking in reducing weight, but he alwaysspends more time on swimming.
| A．less useful | B．less interesting |
| C．more useful | D．more interesting |
—Can I walk across the road now, mum?
— No, you_______. You have to wait until the light turns green.
| A．couldn't | B．shouldn't | C．mustn't | D．needn't |
Song Ying is _________ kind that she has donated almost all her savings to a charity.
| A．very | B．so | C．much | D．such |