— Can I pay the bill by check?
— Sorry, sir. But it's the management rules of our hotel that payment ______be made in cash.
| A．shall | B．need | C．will | D．can |
____ the working efficiency(工作效率), the boss allows the employees to have a coffee
break.
| A．Improving | B．To improve | C．Having improved | D．Improved |
Such __ medical equipment is in ____ danger of breaking down, if not taken good care of.
| A．a; the | B．a; / | C．/; the | D．/; / |
----- Sorry to keep you waiting for long．I’ll make short work of this．
----- _____．I’m not in a hurry．
| A．Take it easy | B．Take your time | C．Not at all | D．Do as you like |
Mr．Barret doesn’t think that all bad language should be allowed．In his opinion, there are _____ that should be kept up．
| A．degrees | B．levels | C．limits | D．standards |
---- Hi, Vera, have you checked the account yet?
---- Certainly, I ______ it five times even though you told me to do it twice．
| A．checked | B．will have checked |
| C．have been checking | D．had checked |