问答题

【参考答案】

[解析] 此题考查词义辨析。carry on继续，坚持；make sure确信，确定；try out试验，尝试。
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问答题
[解析] 此题考查状语从句的连词。while和before都是时间状语的连词，但while是当…的时候，before是在…之前。
单项选择题
What does the woman mean
A．Dr. Wang is as busy today as yesterday.
B．Dr. Wang is not so busy today as yesterday.
C．Dr. Wang is busier today than yesterday.
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