Sofia looked around at all the faces: she had the impression that she _____ most of the guests before.
I toured the Great Wall,I was deeply impressed with the beautiful scenery.
He was about to leave the office for home _______someone knocked the door and asked for some help.
If you find yourself ______ no one will help you, please call me.
The government has taken some measures to solve the shortage of water, but it may be some time __ the situation improves.
— Why was it so noisy over there?— The Twins were surrounded by their fans ____ they stepped out of the hall.