Linking words: time, sequence and addition

I'll call you ______I get to my office.

I found the news depressing_________ .

We'll stay here _________ he arrives, then we'll all set off together.

We managed to finish clearing the garden__________ it got completely dark.

He switched on his laptop,_______he opened a browser and went online.

He's going to have a holiday__________he finishes the project.

Don't worry. I'll watch the children___________they are playing in the park.

He lived in London______he was 14.

My sister speaks English_______ German.

It was very cold______I left home.

______ first I did the reseach, then I calculated the results.

Let's apologize _______ it's too late.

_____his regular salary, he received a generous annual bonus.

Sara called______you were at the mall.

The acting in the film was excellent and the special effects were great ___ .