Neither of them knew what __________ was doing.
| A．other | B．others | C．the other | D．another |
______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
| A．Although | B．As long as | C．If only | D．As soon as |
Either you or one of your students ______ to attend the meeting that is due tomorrow.
| A．are | B．is | C．have | D．be |
Please do me a favor — ______ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
You and I could hardly work together,?
| A． | could you | B． | couldn't I | C． | couldn't we | D． | could we |
— It’s the office! So you ______ know eating is not allowed here.
— Oh, sorry.
| A．must | B．will | C．may | D．need |