八上英语作业本第3页的题目.麻烦回答一下好了.如果可以的话.顺便把后面的也告诉我

八上英语作业本第3页的题目.麻烦回答一下好了.如果可以的话.顺便把后面的也告诉我
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Mum,can you help me?I'm ()my homework,but I don't understand this word.
Which one?Oh ,that's difficult.Why don't you ()it in a dictionary?
I want to.But I can't ()my dictionary.
How about()its meaning in the sentence?
I can't .Can Dad help me?He's () an old film.He can't help you now .