All work and no play makes Jack a dull boy, which suggests that work and play do not ______ but promote each other.
| A．condemn | B．convert |
| C．contradict | D．confirm |
---- Did you know any German before you got to Berlin?
---- Not a single word _________.
| A．have I learned | B．had I learned |
| C．I’ve learned | D．I had learned |
Your new product ________ better if it is advertised on TV.
| A．sells | B．sold |
| C．will sell | D．would sell |
----I’ll come to see your performance at 9:00 tomorrow evening.
----I’ll sorry, but by then my performance _______ and I _________ reporters in the meeting room.
| A．will end; will meet |
| B．will have ended; will be meeting |
| C．will be ended; am going to meet |
| D．is to end; will meet |
Two-thirds of the coins dug up on the island ________ from the year 275AD to 221BC.
A. datesB. date
C. is dated D. are dated
There is only one of the oldest customs that ________ in this district up to now.
| A．was kept | B．were kept |
| C．has been kept | D．have been kept |