施工现场应（）式管理，大门处设置门卫室
A.开放
B.封闭
C.隔离
D.密闭
参考答案：B
I thought my deskmate would be _______ for class, but he was late again. [ ]
A. on time
B. in time
C. at times
D. at any time
汇票是支付的命令，而本票是支付的（）。
