用have,has,already,yet,ever,never,since或for填空

用have,has,already,yet,ever,never,since或for填空

1.I have lived in shenzhen ______I was born.

2.Have you packed your bag______?We are going to set off.

3.I have_____finished my homework,so I can chat with my friends on the Internet.

4.Tom has been a soldier______three years ago.

5.The Green ______visited the Window of the Word twice.

since

yet

already

for

have

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