Was it in the waiting room ______ only allows mothers-to-be to enter that you lost your wallet?
| A．/ | B．where | C．that | D．when |
I hate when people talk with their mouths full.
| A．it | B．that | C．these | D．them |
--- Aren’t you ____ that Wang Kai got full marks in the English examination?
---- Yes, it is really _______.
| A．amazing; amazed | B．amazed; amazing |
| C．amazed; amazed | D．amazing; amazing |
She brought with her three friends, none of I had ever met before.
| A．them | B．who | C．whom | D．these |
We wonder ___________ quite a number of living things are dying out.
| A．that | B．as | C．why | D．when |
He was so busy that he couldn’t help ____________ the experiment.
| A．doing | B．do | C．did | D．done |