1) I do not understand what she is saying.
2) I like this song. And who is singing it?
3) It is very noisy. I can hear only the noise and nothing else.
4) I ( know) that he (is coming) back to Moscow next week.
5) I ( believe) he (is enjoying) his stay in Naples.
6) But I (do not remember) the name of the hotel he (is staying) at.
7) This book (contains) very useful informarion for tourists.