David has got everything ready, _________ it well.
| A．determined to do | B．to be determined to doing |
| C．determining doing | D．to determine to do |
________ the meeting himself gave them a great deal of encouragement.
| A．The president will attend |
| B．The president to attend |
| C．The president attended |
| D．The president's attending |
—They are quiet，aren't they?
—Yes.They are accustomed ________ at meals.
| A．to talk | B．to not talk |
| C．to talking | D．to not talking |
The news of ________ greatly made us surprised a lot as he was indeed very excellent.
| A．not his having elected | B．not his being elected |
| C．his not being elected | D．his not having elected |
________ the program，they have to stay there for another two weeks.
| A．Not completing | B．Not completed |
| C．Not having completed | D．Having not completed |
The country has already sent up three unmanned spacecraft，the most recent ________ at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |