The ______look ______her face suggested that she was angry.[ ]

dioxide, which makes a ______ between us andthe sun, prevents heat from getting out of the atmosphere easily, so the earthis becoming warmer.

Every time I take part in a friend’s big party. I always go to talk to those who just sit alone so that they don’t feel_____.

2— Do you know anything about that man?— NoI know nothing about him _______ I read in the newspaper yesterday

You’ve got a cold, not the H7N9! Everything will turn out OK.—______! I have been worrying about it for days.