My mother has two brothers, both of ____ graduating from Beijing University．
| A．whom | B．them | C．which | D．who |
He attended the party without _______________.
| A．invited | B．inviting | C．having invited | D．being invited |
The library needs ＿＿, but it will have to wait until Sunday．
| A．cleaning | B．to clean | C．clean | D．being cleaned |
Having passed all the tests, she felt a great weight _____ off her mind.
| A．taking | B．taken | C．take | D．to be taken |
New ideas sometimes have to wait for years before _____.
| A．being fully accepting | B．fully accepting |
| C．having fully accepted | D．fully accepted |
Seeing the soldiers well _____ for the flood-fight, the general nodded with satisfaction.
| A．prepare | B．preparing | C．prepared | D．having prepared |