Конечно, давайте разберем каждое предложение, вставив правильные формы глаголов и указав, какое время мы используем.
Is Andy here? - I don't know, I haven't seen him today. (Present Perfect)
Where are you going? To the library. (Present Continuous)
Would you like to borrow this magazine? - No, thanks. I have read it before. (Present Perfect)
Betty's bus is arriving at 5 o'clock. I must go and meet her at the bus station. (Present Continuous)
Have you seen my record book? I have been looking for it all the morning. (Present Perfect; Present Perfect Continuous)
Mike has been talking to his friend for an hour already. (Present Perfect Continuous)
More and more forests are disappearing because of fires nowadays. (Present Continuous)
How long have you been working on this problem? (Present Perfect Continuous)
The first lesson doesn't finish at 9.45. (Present Simple)
They are playing football tonight. (Present Continuous)
Linda is disappointed. She has failed her test. (Present Perfect)
School prepares children for life. (Present Simple)
We are having a party next Saturday night. Will you come? (Present Continuous)
Are you trying to take photos? It's not allowed, you know. (Present Continuous)
Do you remember where he works? (Present Simple)
Если у вас есть дополнительные вопросы или нужно объяснить какое-то конкретное время или конструкцию, дайте знать!