We were all __________when we heard the news.

_____ does your sister go to school? –She goes to school in my father’s car. 

In crowded places like airports and railway stations, you     take care of your luggage.

We won’t start the meeting ________ the teacher arrives.

—Will you buy the red T-shirt or the black one?—I will buy ______ of them. One is for my brother and the other is for my father.