—Dad, shall we go to the World Park tomorrow?
—Sorry. I won’t be free, but you ______ ask Mum to go with you.
| A．must | B．may |
| C．would | D．should |
You won't work out the problem ______ you understand it. So listen to me explain now.
| A．since | B．when |
| C．unless | D．though |
—These drawings are made by the three-year-old girls here.
— Well, ______creative the children are!
| A．very | B．quite |
| C．what | D．how |
Good, you’ve done it well! You need no more help from us, ______.?
| A．do you | B．need you |
| C．don’t you | D．needn’t you |
— What did you think of our performance on the charity show?
— Wonderful! I don’t think I can see a ______ one.
| A．bad | B．worse |
| C．good | D．better |