题目内容
Fill in the blanks with the verbs in their proper forms (用所给动词的适当形式填空,词数不限):
When his father got home, he pretended ______ (do) his homework.
答案:to be doing
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题目内容
Fill in the blanks with the verbs in their proper forms (用所给动词的适当形式填空,词数不限):
When his father got home, he pretended ______ (do) his homework.