I wonder what Mr. Wang asked you just now — He asked________ .

My father used to after dinner, but now he is used to TV.

The population of Africa is ________ so rapidly as to cause concern of the whole world. [ ]

Meals in Spain are quite different from they have in China.

Mary now helps at a community center three days a week in her free time for free.一I also want to be a there to help more people.