Question

英语 语法填空

scientists are convinced _____ the positive effect of laughter.
john thinks it won not be long______ he is ready for his new job.

Answer 1

Scientists are convinced _of_ the positive effect of laughter.
John thinks it won not be long_before_ he is ready for his new job.

be convinced of 是一个短语。
It's not （won't be) long before...是一个句子的结构。

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Answer 2

第一个填 of
第二个填 before

Answer 3

of
that