Mary____ a math problem with her classmates when the math teacher knocked at the classroom door．（ ）
| A． |
has discussed |
B． |
was discussed |
| C． |
was discussing |
D． |
discusses |
I know his face_____I can't remember his name．（ ）
A．andB．butC．orD．so
﹣Can we play soccer here？
﹣No， you____play it near the road． That's too dangerous!（ ）
A．canB．mayC．won'tD．mustn't
Look at the picture on the right! She is going_____．（ ）
A．into the library
B．out of the post office
C．into the supermarket
D．out of the bank
There are many good teachers in_____school．（ ）
A．weB．himC．ourD．themselves
In every____there has to be some give﹣and﹣take．（ ）
A．friendshipB．instrumentC．attentionD．blackboard