She was looking for her bicycle key _______ she thought she might have put it.
The traffic light is red, so I _____stop my car.
It was in the lab____ was taken charge of by Mr Harris ____ they did the experiment.
---- What is the cost of your shirts here, sir? ---- It depends on which fashion you want to buy, and the prices _______ from 100 dollars to 500 dollars.
---- Water can dissolve almost anything and give nutrients to creatures. ---- Yes, and that’s one of its ______.
_____ I entered, he was _____ in his book and didn’t notice me.