第一题：You must be careful before you( ) A.across B.crossing C.cross D.walk cross
第二题：---Do you know ( )
---It is about 10 minutes' walk from here
A.how far is the post office
B.when does the post office
C.how far the post office is
D.when the post office opens
第三题：Which do you like ( ),purple or green?
I like green( )
A.best best
B.better better
C.best better
D.better best
适当形式填空
第四题：He came to the classroom ,------------（sing）a song.
第五题：He -----（fix）the broken bike when I came in
第六题：After you ------（pass）the seventh tree ,you will see my door
请讲解,50