Поставьте предложение в указанное время: 1) i saw jane a day ago. present perfect 2) my sister is still at school now. past simple: present simple: 3) they are writing an essay at the moment. past simple: present perfect: 4)there is something strange in his answer. past simple: present perfect:

1 I have seen Jane.
2 My sister was at school.
My sister is still at school.
3 They wrote an essay.
They have written an essay.
4 There was something strange in his answer.
There has been something strange in his answer.