The blackboard is _______ the wall(?).

   It is_________ in the wall.

 A. on, not       B. on, /                 C. in, no

 ______ the blackboard, and you can ________ some number on it.

________ the blackboard, please. Can you ________ the words(单词)on it?

1. A.
   Look, see
2. B.
   See, look
3. C.
   Look at, see
4. D.
   See, look at

______ the blackboard, and you can ________ some number on it.

1. A.
   Look at; see
2. B.
   Look at; look at
3. C.
   See; look at
4. D.
   See; see