Generally speaking, almost all the kids are ____ about how everything around them works. [ ]

Do you know _______ he turned off the lights or not when he left the classroom?—Sorry. I don’t know.[ ]

If my parents ______ free tomorrow, we _____ to visit my grandparents.

Do you have a minuteI’ve got something to tell you.—OK,　　　 you make it short.

Which of the two shirts do you like better—I’ll take . They are all expensive and out of fashion.