Question

Употребить Present, Past или Future Perfect. 1. Не (to study) French before he (to enter) the university. 2. When we (to come) to the station, the train already (to leave). 3. I (to do) my homework by six o\'clock tomorrow.

Answer 1

1)He had studied French before he entered the university.;2)When we came to the station ,the train already had left.(Past ;3)I"ll have been done my homework by 6 o'clock tomorrow .(Future Perfect )

Answer 2

1. Had not studied French before he enters the university. (Past Perfect)
2. When we came to the station, the train had already left. (Past Perfect)
3. I will have done my homework by six o'clock tomorrow. (Future Perfect)