I will never forget the day _____ we worked together in London．
| A．when | B．on that | C．which | D．while |
I'd like to take _____ of this opportunity to thank you all for your cooperation.
| A．profit | B．benefit | C．advantage | D．interests |
________ of the land in that district _______ covered with trees and grass.
| A．Two fifth; is | B．Two fifth; are | C．Two fifths ; is | D．Two fifths; are |
The number of people present at the concert was______than expected . There were many tickets left .
| A．much smaller | B．much more | C．much larger | D．many more |
–Excuse me , Sir . Smoking is not allowed here .
–Oh, sorry. I __________.
| A．haven’t know | B．don’t know | C．hadn’t know | D．didn’t know |
Whenever you are _____ , you can ask us for help.
| A． in ruin | B． in reward | C． in trouble | D． in turn |