Taking our own bags when _______can help protect the environment.
—Shenzhen is really a good place. I have a good time here.—Why not stay here for________two days?
All of us felt______when we heard the _____news.
The students said they would have____holiday.
You can’t go back home______you finish your homework.
— Why not join us in the game, Joe? —________, but I have to finish reading the book first.