— Who is _______, Bill, Tom or John?— I think John is ____ than Bill and Tom.
---How do you study for a test? ---________.
---Why don’t you listen to tapes to improve your listening skills? ---It’s _______ difficult for me ______ follow.
---I’m going to take my driving test this weekend. ---________.
You will fall behind others ____________ you work hard.
H7N9 bird flu is a virus can make people die. We’d better stay away from birds at present.