按要求完成下面按句子1 Are these his computer games?(改为肯定句)2 These are backpacks.(改为单数句)3 His grandfather is my friend.(改为一般疑问句)4 That is his English dictionary.(改为复数句)

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按要求完成下面按句子
1 Are these his computer games?(改为肯定句)
2 These are backpacks.(改为单数句)
3 His grandfather is my friend.(改为一般疑问句)
4 That is his English dictionary.(改为复数句)

1 These are his computer games.
2 This is a backpack.
3 Is his grandfather my friend?
4 Those are his English dictionaries.