I think it is necessary for my 19-year-old son to have his own mobile phone, for I sometimes want to make sure if he _____ home for dinner.
.Think about ___ you enjoy doing, and look for others that enjoy it too.
---Jack,do you mind if I use our computer for a while? ---Not at all.___.
— I have got a headache. — No wonder. You___________in front of that computer too long.
The expert insisted that silkworms were first raised by a woman in___________is now Hebei Province.
My grandfather is as ___________as a young man and hates sitting around doing nothing all day.