When I tried to find _________that prevented so many people from taking part in the program, it seemed to me that there were two main reasons.
| A．why it did | B．that it did | C．what it was | D．why it was |
Because the shop __________ all the T-shirts are sold at half price.
| A．has closed down | B．closed down |
| C．is closing down | D．had closed down |
——What __________ is the terrible noise?
— The neighbors __________ for a party.
| A．have prepared | B．are preparing |
| C．prepare | D．will prepare |
I do not really work here. I __________ until the new secretary arrives.
A, just help out B. have just helped out
C. am just helping out D. will just help out
The new secretary is supposed to report it to the manager as soon as she __________
| A．will arrive | B．arrives |
| C．is arriving | D．is going to arrive |
I need one more stamp before my collection __________.
| A．has completed | B．completes |
| C．has been completed | D．is completed |