_____ they _____ to go to the park when they were children?
--- How many of you have solved the math problem? --- ________, the math problem is far too difficult for us to work out. .
I wondered ___________________.
--- Is there anything you want me to get on the bus? --- Sure. ______ take the suitcase?
This educational CD-ROM makes _____ easier for you to learn English. After using it for a month, you’ll have no difficulty ________ with foreigners.
--- Can I walk across the road now, Mrs. Chen? ---No, you ______. You have to wait until the light turns green.