It's a good habit to wash your hands ________ you have meals.( )
A.unlessB.whileC.whenD.before
﹣ What are you going to be when you ____________?
一I want to be a doctor like Wu Mengchao.
grow up
turn up
get up
一How long can I keep these books?
一According to the library rules,you __________ return them within 7 days.
must
might
could
In the war against COVID﹣19,the Chinese government is making efforts to make sure the vaccine(疫苗)is _________taken all over the country.
hardly
deeply
widely
一Is everyone here today?
一No.Two students are ________ because they have a cold.
angry
absent
active
Mike has lost new watch.He is looking for it everywhere.
he
his
him