"How do you go to the airport?", his friend asked him.

He was sitting on a chair. It was uncomfortable. (using the relative pronoun)

The teacher said to Lien "What's your hobby?"

=> The teacher asked ____________________.

Shirley didn't begin to read until she was eight. 

=> It was not until _____________________________.

My father (work) ______ for this company since he (graduate) ______ from his university in 1999.

Trees _______ since it stopped raining.

I gave Ted the massage, but he already knew about it. (needn’t)