That experimenet was amazing - the plants were red and they ... yellow under certain light conditions.

Oh what a surprise, you ... since I last saw you.

It's already 6pm. We .... on time

..... enough time to stop at the office on the way to the reception?

I missed my taxi and when I arrived at the conference, the presentation ....

We arrived at 6 o'clock. Some people were already queueing. They ... for 4 hours when we arrived !

What ... yesterday when the inspectors .....?

Usually, I ... in London, but at the moment I ... on a special project in Paris.

I just saw the news -  the President .... We will have to have an election soon !

Every day I ... to the university.