79. Before there goes the bell for class
题型:选择题
问题:
79. Before there goes the bell for class, our math teacher took out a piece of and wrote his problems on the blackboard.
A.brush pen
B.chalk
C.paper
D.Pencil
79. Before there goes the bell for class, our math teacher took out a piece of and wrote his problems on the blackboard.
A.brush pen
B.chalk
C.paper
D.Pencil