游艺类设施的每个操作员都必须爱护游艺设施。做到“三好”（管好、用好、修好）“四会”（）。
参考答案：会使用、会保养、会检查、会排除故障
–Do you know this boy?He works really___.
–Yes, I can ___ see him play. He always studies.
A．hardly; hardly
B．hard; hardly
C．hard; hard
D．hardly; hard
His idea was such a good one ______ we all agreed to use it.
A．as
B．that
C．so
D．but
