We didn’t start our discussion _____ everybody arrived.
| A．since | B．if | C．while | D．until |
--- _______ useful tool the computer is!
--- I agree. It’s ________ interesting as well.
| A．What a; / | B．How a; the | C．What an; / | D．How an; the |
We can’t finish the words in two days we need ___day
| A．as a third | B．a third | C．as a three | D．three |
___of the apple ___bad
| A．Second-threes,goes | B．Two-threes,go | C．Two-third,goes | D．Two-thirds,goes |
___of them has a dictionary and ___one of them can look up words in the dictionary
| A．Each,every | B．Every ,each | C．Each,each | D．Every,every |
It____Jim because he left here a moment ago
| A．might be | B．must be | C．can’t be | D．needn’t |