If he… ............. harder, he would have passed his examinations.

I will not go to bed until I ....................... all of my homework assignments.

I've been ....... University since six o'clock in the morning.

When they ........ , we'll all go together to the end-of-the-year party.

The lady ............................... you just spoke with can help with your problem.

Nora has not been to Paris .................. 2005.