Ответ:
3)The students are at the library.
4)Canada is a big country.
5)Richard knows the answer to the question.
6)I am late for class.
7)They are tired today.
8)We live in an apartment downtown.
9)The kids are watching TV.
10)My uncle is a fireman.
11)Her books are on the table.
12)The taxi driver is driving the passenger.
13)I am studying English.
14)Lions are dangerous.
15)Robert eats breakfast as six o'clock.
Объяснение: