They are writing letters now
Did Ann swim with her friends last summer ?
We have already helped mother about the house.
A boy haven't read books this winter.
Tom usually don't live in a big house.
Did Tom send letters and postcards yesterday?
He isn't eating mango now
Have you been in Moscow this year?
1.They are writing letters now.(present continious/progressive)
2.Did Ann swim with her friends last summer?(past simple)
3.We have already helped our mother about the house(Present Perfect)
4. A boy is not reading books this winter (Present Continious/progressive)
5.Tom doesn't usually live in a big house (Present Simple)
6.Did Tom send letters and postcards yesterday? (Past simple)
7.He is not eating a mango now (Present continious/progressive)
8 Will you be in Moscow this year? (Future Simple)