Food safety is important. Rules to stop people from food pollution.
. Mary spends a lot of money on clothes _______ her family is not rich.
—Shall we go out for a walk?—Sorry, I can’t. I _______ my homework.
I’m sorry, I didn’t _______ you clearly. Would you say it again?
I ________ ride a bike to school. But this morning I took a taxi because I got up late.
Which is the _______ way to Qingdao, by plane, bus or train?