单项选择题
A:I'm afraid Mr. Watson is not in the office at the moment. B:（）
A. Can you take a message， please? B. My name is Don Bradley. C. Hello. Can I speak to Phil Watson， please? D. This is Don Bradley.
单项选择题 We employ about seven hundred full-time people. But we（）causal staff when we need them.
单项选择题 A:Something important has come up.（） B:Can it wait? I’ll be through in ten minutes.
单项选择题 We can make the new research an（）priority.
