Brush your ________ before you go to bed．

1. A.
   tooth
2. B.
   tooths
3. C.
   teeth
4. D.
   toothes

Brush ([br ] vt. 刷) your ______ before you go to bed every evening.

[　　]

　　A. tooth B. teeth C. tooths D. toothes

This brush ________ the walls long ago．

1. A.
   is used to painting
2. B.
   used to paint
3. C.
   uses to paint
4. D.
   was used to paint

He ________ brush his teeth before going to bed.

1. A.
   can
2. B.
   should
3. C.
   may
4. D.
   shouldn't

Chinese brush-pens（毛笔）were used to ________ in the old days.

1. A.
   writing
2. B.
   write
3. C.
   to write
4. D.
   wrote