Almost all of his time ______ experiments, he has no time to visit his parents.
| A．devoted to do | B．devoting to doing | C．devoted to doing | D．is devoted to doing |
If we have illegal immigrants _________ in，many local workers will lose their jobs．
| A．came | B．coming |
| C．to come | D．having come |
The director had her assistant ________ some hot dogs for the meeting．
| A．picked up | B．picks up |
| C．pick up | D．picking up |
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 |