Young as he is, David has gained ____ rich experience in ____ society.
| A．the; the | B．a; 不填 | C．不填；不填 | D．不填；the |
Due to the heavy rain and flooding，ten million people have been forced _________ their homes．
| A．leaving | B．to leave |
| C．to be left | D．being left |
Susan wanted to be independent of her parents．She tried _________ alone．but she didn’t like it and moved back home．
| A．living | B．to live |
| C．to be living | D．having rived |
I hear they've promoted Tom．but he didn't mention ______ when we talked on the phone．
| A．to promote |
| B．having been promoted |
| C．having promoted |
| D．to be promoted |
He was busy writing a story，only _________ once in a while to smoke a cigarette．
| A．to stop | B．stopping |
| C．to have stopped | D．having stopped |
As new driver．I have to practice _______the car in my small garage again and again．
| A．parking | B．to park |
| C．parked | D．Dark |