would, was going to and past continous
was (just) about to
was/were to + infinitive
was/were to have + past participle
100

I turned off my mobile phone because the film was ___ to start

I turned off my mobile phone because the film was about to start

100

I met Belinda when I was a child, and we ____ to remain friends for nearly twenty years.

I met Belinda when I was a child, and we were to remain friends for nearly twenty years.

100

We ____ to have spent the last week of our holiday in Venice, but we ran out of money

We were to have spent the last week of our holiday in Venice, but we ran out of money

200

I didn't post the letter to Kate because I was _____ to see her the following weekend

I didn't post the letter to Kate because I was going to see her the following weekend

200

I was ____ to turn and walk away when she said, “I have a grandson your age.”

I was about to turn and walk away when she said, “I have a grandson your age.”

200

He ____ to find out years later that the car he bought was stolen.

He was to find out years later that the car he bought was stolen.

200

I was to ____ attended the meeting, but I was ill

I was to have attended the meeting, but I was ill.

300

I didn’t want a full-time job because I (start) university in the autumn.

I didn't want a full-time job because I was going to start university in the autumn

300

We ran into the cinema and got to our seats just as the film (start)

We ran into the cinema and got to our seats just as the film was about to start

300

He left suddenly, for reason that I (never/understand) fully 

He left suddenly, for reasons that I was never to understand fully

300

Charles (lead) the expedition, but he fell ill and couldn't leave the hotel

Charles was to have led the expedition, but he fell ill and couldn't leave the hotel

400

He gave me Tracy's birthday present because I (see) her the next day for lunch

He gave me Tracy's birthday because I was seeing her the next day for lunch 

400

We (watch) a movie when someone (call) me on the phone

We were about to watch a movie when someone called me on the phone

400

We (stay) with Vince in Lisbon many times before he moved to Madrid.

We were to stay with Vince in Lisbon many times before he moved to Madrid.

400

My grandfather (start) university in 1939, but because of the war, he joined the army instead.

My grandfather was to have started university in 1939, but because of the war, he joined the army instead.

500

I (take) the bus when I (discover) it was the wrong stop

I was about to take the bus when I discovered it was the wrong stop

500

Mr Jones (speak) at the meeting

Mr Jones was to speak at the meeting (it was arranged and he did)

500

Mr Jones (speak) at the meeting, but he had to cancel because of his illness.

Mr Jones was to have spoken at the meeting, but he had to cancel because of his illness. (was arranged, but didn't happen)