单项选择题

John, I haven't had a chance to phone Bill. Have you Liz（）

A．Liz has tried unsuccessfully to phone Bill.
B．Liz is asking John to phone Bill.
C．Liz has been too busy to phone Bill.

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Scenario I’m going to describe a situation． A company wants to summarize the achievements in the past year，talk for two minutes about the company’S achievements and decide which two achievements are most useful． Here are some ideas to help you． Prompt material [*]
单项选择题
How to check the taste（）

A．By eating them.
B．By eating them and doing chemical analysis．
C．By doing chemical analysis
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