—________do they go to the park?—Because they want to play games there.
—Could you tell me________. ?—Quite well, thank you.
---You're really a big help!---________. Many people will feel kind of airsick on the plane.
---Lucy doesn’t mind lending you her dictionary.---I think she doesn’t, but I ________do so. I’ve already borrowed one.
Some physics problems in this book are _________difficult for the students _________work out.
---I think students should have mobile phones to call their parents.---___________. They often use them to play games instead.