Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

The People's Republic of China ______ (found) on October 1, 1949．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

If plastics and rubber ______ (burn), they give off poisonous gases．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

______ (consider) your opinions carefully, they decided to get the house repaired．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

His heart ______ (beat) so fast that he could hardly breathe．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

The scientists thought the rocks brought from the moon were worth ______ (study)．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

______ (watch) by his teachers, she felt nervous．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

The children ______ (be) in the charge of Mrs Fanny when their mother is away from home．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

It ______ (believe) that he will publish his first book next month．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

The building ______ (build) will be a modern library．

Fill in the blanks with the given words in their proper forms （用所给单词的适当形式填空，每空格限填一词）

The Chinese ______ is one of the oldest in the world．(civilize)