Английский язык, помогите пожалуйста

Задание 1. Задайте вопросы к предложениям.

1)My brother had done our flat by 4 o’clock.
_1. Had my brother done our flat by 4 o’clock?
2. When did my brother do our flat?
3. What time had my brother done our flat by?
4. Who had done our flat by 4 o 'clock?
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2) Pam had washed the plates by the time mother came back.
1. When did Pam wash the flates?
2. What had Pam washed by the the time mother came?
3. Had Pam washed the plates by the time mother came back?
4. Who had washed the plates by the time mother came back?

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3) Ann had done the shopping, when she went back home.
1. Had Ann done the shopping, when she went back home?
2. What had Ann done when she came back?

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4)Lucy had left before Jill returned.
1. Had Lucy left before Jill returned?
2. When did Lucy leave?
3. Who had left before Jill returned?
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5) Tim had already sent the email to Bob, when he phoned.

1. Had Tim already sent the email to Bob, when he phoned. ?
2. When did Tim send the e-mail to Bob?
3. Who had already sent the email to Bob.?
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They were able to come for one day only.