Don’t kill your precious time chatting online all day long. It’s impossible for the lost time ,you know.
— How are you getting along with your study these days? — I'm glad to see it is .
— Hello, this is Shannon. I’m afraid I won’t be able to come to your office on time. —______ ! I’ll wait for you.
The stamps, once ____, will be very popular with stamp-collectors.
Both of these roads can lead you to the History Museum. You may take ____.
— So how long have you been in Beijing? — Just a couple of days. I’m on a great tour, you know, and I ______ all the places of interest here.