Mother was in the kitchen ______ lunch while I was ______ the coming exam.
| A．prepared; prepared for | B．preparing; preparing for |
| C．prepared for; prepared | D．preparing for; preparing |
This novel is set in the modern city, San Francisco, so once_______, it will be very popular.
| A．publishes | B．having published |
| C．publishing | D．published |
Walter offered us a lift when he was leaving the office, but our work _______,we refused the offer.
| A．not finishing |
| B．had not been finished |
| C．not having finished |
| D．not having been finished |
—Is Bob still performing?
—Im afraid not.He is said _______ the stage already as he has become an official.
| A．to have left | B．to leave |
| C．to have been left | D．to be left |
I don’t know whether you happen_______, but I’m going to study in the U.S.A. this September.
A. to be heard B. to be hearing
C. to hear D. to have heard
The flu is believed _______ by viruses that like to reproduce in the cells inside the human nose and throat.
| A．causing | B．being caused |
| C．to be caused | D．be have caused |