—Dad, can I surf the Internet?—Again? I wish that you ______ going on line ______ your health.
一"Peter, have you got your new flat furnished?—Yes. I ______ some used furniture and it was a real bargain.
These diagrams are especially helpful when we have a concrete problem ______ at hand.
This kind of gel pen which ______ smoothly is quite popular with students.
It is the bus driver who should ______ the safety of the passengers.
I’m very grateful to my high school teachers, without ______ help I wouldn’t be so excellent.