. “Where is Mother.” “She is in the kitchen. She _______ the housework all morning.”
| A．is doing | B．was doing |
| C．has done | D．has been doing |
It is difficult to imagine his ______ the decision without any consideration.
| A．accept | B．accepting | C．to accept | D．accepted |
It is worth considering what makes “convenience” foods so popular, and ______ better ones of your own.
| A．introduces | B．to introduce | C．introducing | D．introduced |
Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation.
| A．having held | B．to hold | C．holding | D．hold |
I still remember ______ to the Famen Temple and what I saw there.
| A．to take | B．to be taken | C．taking | D．being taken |
Planning so far ahead _____ no sense — so many things will have changed by next year.
| A．made | B．is making | C．makes | D．has made |