I wanted to buy a comic book , but there was in the bookshop.
--- You look ______,Paul. What’s the matter?--- I’m having trouble ______ math.
-- I don’t know ______ with this problem. It’s too hard. --- You can ask Mr Wang for help.
I used to go to sleep ________ my bedroom light ________.
—There is ____ time. You don’t need to hurry. —But I want to see her as early as possible.
There are ________ students waiting in the hall, ________?