The boys don’t know ___________.
| A．how do they swim |
| B．how swim |
| C．they how swim |
| D．how to swim |
I don’t know _________ the problem.
| A．how deal with | B．how to deal with |
| C．what to deal with | D．what do with |
Hainan is a very good island. It’s the second ________ island in China.
| A．largest | B．large | C．larger | D．most large |
The accident happened ________ a cold winter morning.
| A．in | B．at | C．of | D．on |
— ________ fine weather it is today!
— Let’s go for a picnic.
| A．What | B．How | C．What a | D．How a |
—My father has decided to _________ smoking.
—That’s good news for us.
| A．give up | B．hand up | C．put up | D．look up |