--- Now lots of teenagers spend a lot of time playing computer games.--- Yes. Teachers and their parents should prevent them ___________ too much.
----Where is Mr. Chen.? ----is in the classroom.
按字母表的顺序,排列正确的一组是。
---What’s this in English? --- _______.
-- What’s the weather like _______ winter? --- It’s _____.
I ______ Mary. This ______ Tom.