It’s not _________ good idea to drive for four hours without _________ break.
Some students have trouble _____grammar while others have difficulty______ new words.
--What did you say?--So you _____to me.
"Why don’t you stay here over the weekend? " She said._______
Watching TV is____ a kind of relaxation, and it also ____our knowledge.
We study several subjects, __________ Chinese, maths, English and so on.