Question

[Lee Lynn]

1. How long have you stood here waiting for me?

  =>When 

2. I have swept the house for an hour.

  => I

3. I started training my dog six month ago.

  => I 

 4. When did your sister start working here school?

  =>How long 

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Answer 1

[Lê Trang]

1. How long have you stood here waiting for me?

  =>When did you stand here waiting for me?

2. I have swept the house for an hour.

  => I swept the house an hour ago.

3. I started training my dog six month ago.

  => I have trained my dog for six month.

 4. When did your sister start working here school?

  =>How long has your sister worked here school?