1. He hasn't written to his friend for 2 months
2.they haven't played football since 4..30 pm
3.we haven't met each other for 5 weeks
4.it's the first time she has seen that man
5.how long has your father worked in this factory
6.mary hasn't gone to VN before
7.my mother teaches me English every day
8. A new church has just been built near my house