問5 図書館は 不便な 場所に あります。
不便
A．ふびん
B．ぶびん
C． ふべん
D．ぶべん
参考答案：C
The reason _____ he could not go there was _____ his grades were too low.
A．why ; because
B．that; because
C．why; that
D．that; that
钻进过程中水龙头的中心管带动钻柱旋转。
