How long do you think ______ the Microsoft brings out a new product?
| A．it will be before | B．will it be until |
| C．will it be when | D．it will be that |
Thenumberofthepeoplewho _____cars _____increasing.
| A．owns,are | B．owns,is | C．own,is | D．own,are |
____ofthemoney _____usedup.
| A．Three-five,are | B．Three-fifths,havebeen |
| C．Three-fifths,hasbeen | D．Third-fifths,is |
Seventypercentofthestudentsinourschool_____fromthecountryside.
| A．is | B．are | C．comes | D．arecoming |
NooneexceptJackandTom _____theanswer.
| A．know | B．knows | C．isknowing | D．areknown |
Nothingbutcars____intheshop.
| A．issold | B．aresold | C．weresold | D．aregoingtosell |