— I don't know_ .
— You can go and ask Jack.
| A．when does the train leave | B．that we will plant trees or not |
| C．if she had come yesterday | D．what I should buy for him |
It’s cold outside．________your sweater before you go out．
| A．Put on |
| B．Turn on |
| C．Put up |
| D．Give up |
—How long does it take to get to the airport？
—Forty minutes．But it’s foggy today．I’m not sure________the highway will be closed soon．Let’s set off earlier．
| A．whether |
| B．when |
| C．how |
| D．why |
—You study________hard________you’re sure to pass the exam．
—Thank you for saying so．
| A．enough；to |
| B．as；as |
| C．so；that |
| D．such；that |
—Who broke the window？
—________．A strong wind broke it last night．
| A．Somebody |
| B．Anybody |
| C．Nobody |
| D．Everybody |
Many students said that they were willing to work hard to make their dreams________true．
| A．come |
| B．came |
| C．comes |
| D．coming |