Mr. Smith is quite generous and warm-hearted, a person______ you can turn when having trouble.
My head-teacher helped me a lot when I was in trouble. I do wish I could do something for him__________ one day.
To come back before Sunday, I have made a few minor ________ to the schedule of my trip.
--- He looks so tired. What’s wrong? --- Nothing serious. He just stayed up last night, ___________his papers.
He _________ desperately in vain for something to say to break the silence.
I doubt ____________all the people invited will come to attend the ceremony in such bad weather.