------Is Peter here yet?

------Not yet, but he ___________ be here soon. He is usually on time.

A．would

B．need

C．must

D．should

坚持“发现溢流立即关井，怀疑溢流关井检查”的原则，发现溢流、井漏、钻井液性能变化及油气显示等异常情况，应立即报告（）实施关井。

A、值班干部

B、钻井监督

C、井队井架工

D、司钻