Have you ever _____ playing in front of thousands of people at a concert?
| A．dreamed | B．imagined | C．pretended | D．wanted |
I have no doubt in my mind______ they will be glad to see me.
| A．if | B．whether | C．that | D．about |
With the help of high technology, many new substances（物质）______in the past years.
| A．discovered | B．have discovered | C．had been discovered | D．have been discovered |
I’m certain David’s told you his business trouble. ________, it’s no secret that he owes a lot of money to the bank..
| A．However | B．Anyway | C．Therefore | D．Though |
---- Will Joe attend the party? ----- If his wife won’t go to the party,_________.
| A．he will either | B．neither does he | C．he neither will | D．neither will he |
----- Can I go back home now? ----- You______ to leave until you ______ your work.
| A．won’t allow; finish | B．won’t be allowed; will finish |
| C．won’t be allowed; have finished | D．won’t allow; will finish |