--The river used to be clean. How does it become dirty? -- There are many factories ________ waste water into it. A. pouring B. pour C. poured
______ his shoes under the bed?
There is a big supermarket near my house. It’s very easy _________ it.
The dress fits(合身) me well,_______ I don’t want to buy it because it’s too expensive.
-Are these your goldfish? - Yes, please give ___ to ____.
-- _____ do you go to the net bar(网吧)? -- Never. I don’t think a student should go there.