The father, along with his four children _______ Hangzhou. When they will be back ______ fixed. 

 The fact that so many people still smoke in public places ________ that we may need a nationwide campaign to raise awareness of the risks of smoking.(2011·江苏)

—Remember that where and when two different English question words___________. —I see, but can you tell us how to use them, sir?

The girl in red ____my sister.

Either of you ________ going there tonight.