Only when you have finished your homework ______ go home.
| A．can you | B．would you | C．you will | D．you can |
It is usually not quite cold in this area in March，but sometimes temperature ______ low.
| A．should | B．must | C．can | D．shall |
Jack was once a common name，,I think, that is seldom chosen nowadays．
| A．it | B．one | C．who | D．which |
-The weather isn’t good enough for an outing，is it?
-To much dust．We can’t haveat this time of the year．
| A．a worse day | B．a worst day | C．a nicer day | D．a best day |
Subway Line 4，into use in September 2009，has made traveling in Beijing easier．
| A．having been put | B．putting | C．being put | D．put |
-Tom，you are smoking again?
-? It’s none of your business．
| A．Why not | B．what for | C．So what | D．How come |