The car ________ on the way , consequently ________ .
| A．was stuck in the mud ; which led to Jack to miss the train |
| B．was caught in the mud ; and led Jack’s missing the train |
| C．was held up in the traffic ; leading to Jack’s missing the train |
| D．was held back in the traffic ; it led to Jack’s missing the train |
The flu is believed ________ by viruses that like to reproduce in the cell inside the human nose and throat.
| A．causing | B．being caused |
| C．to be caused | D．to have caused |
________ 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 |