--- Your classroom is very clean.
--- Sure. It ________ after school every day.
| A．is cleaned | B．cleans | C．cleaned | D．is cleaning |
Not everyone knows_____they want to be.
| A．what | B．how | C．where | D．why |
Science is _____ difficult for some students ____ learn, so many of them don’t like it.
| A．enough, to | B．too, to |
| C．so, to | D．much , to |
---What are you doing?
---I’m_____my English book.
| A．looking | B．looking for |
| C．looking after | D．Reading |
For your health, you should eat_____vegetables and_____meat.
| A．more, less | B．more, fewer |
| C．fewer, less | D．fewer, more |
_____students went there.
| A．Two hundreds of | B．Handreds of |
| C．Hundreds | D．Two hundreds |