Ms. Arroya says that when workshop__________ begins to slow down, it-考呗网题库移动版

单选题 Ms. Arroya says that when workshop__________ begins to slow down, it may be time to hire more workers.

A．product
B．producer
C．produce
D．productivity

参考答案D

解析: 在when引导的状语从句中，主语要表示“工厂生产力”时，才能和动词slow down搭配使用，因此D为正确答案。

单选题 An investigation by the committee uncovered __________instances in which the institution's resources had been misused.

A．none
B．any
C．no
D．much

单选题 Ms. Harffield will make an excellent executive because, when corffronted with a problem, she knows__________ what course of action to take.

A．hastily
B．urgently
C．abruptly
D．instantly

单选题 The advertisement for the security guard position says that applicants must be able to remain__________for six hours straight.

A．alert
B．observable
C．discovered
D．obvious