20 . поставьте предложения в вопросительную и отрицательную форму 1. someone got a letter last month. 2. he forgot to meet somebody. 3. someone showed him the way to the busstop yesterday 4. there is someone in this house.

1 Someone did not get a letter last month.

When did someone get a letter?

2 He didn't forget to meet somebody

What did he forget?

3 Someone didn't show him the way to the bus stop yesterday

When did someone show him the way to the bass stop?

4 There is not someone in this house

Who is in the house?