Условие задания:
Write general questions. Don't use question marks (they are given):

1. They have logged on to the computer.

?

2. You have written the wrong address.

?

3. Mike has returned from the shops.

?
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1. They have logged on to the computer.

   Have they logged on to the computer ?

2. You have written the wrong address.

     Have you written the wrong address?

3. Mike has returned from the shops.

    Has Mike returned from the shops?