As it turned out to be a problem of no importance , we so much time looking into it .
| A．needn’t spend | B．didn’t have to spend |
| C．needn’t have spent | D．oughtn’t to spend |
and happy, Tony stood up and accepted the prize.
| A．surprising | B．Being surprised | C．Surprised | D．To be surprising |
He found them at a table chess.
| A．sat; to play | B．sitting; to play | C．seated; playing | D．seat; playing |
Although she has a lot of problems, she managed to remain .
| A．optimistic | B．cautious | C．concert | D．anxious |
The old professor told us that every part of the materials should be made use of _________the station.
| A．building | B．to build | C．build | D． being build |
-----Can i pay the bill by check?
------Sorry, sir. But it is the management rules of our hotel that payment _________ be made in cash.
| A．shall | B．can | C．will | D．may |