According to the passage, the best way to find a work-at-home job is（）
A. through networking
B. by personal visits
C. by online application
D. through emailing
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如果一个词组的直接成分间可以插入“的”而不改变基本意思，那么从语法关系看，这个词组是________结构。
2（）
A. In a cinema.
B. In a library.
C. In a store.
D. In a bank.
“热情”是一个兼类词，在“很热情”中属于形容词，在“有热情”中属于名词，在“热情态度”中属于________。
If Jack（）the real situation, he would have made a different plan.
A. knows
B. knew
C. will know
D. had known
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