The engineer ________ my father works is about 50 years old.
We had much difficulty __________ home in the snowstorm.
“Be careful, do not stand ___________ to the fire, Jim.” Mrs. Thompson said to her little son.
Several pages were found _________ when the book _________ me.
--- How many students are there in your school?--- There are 2,000 students here __________.
____________ two exams to worry about, I have to work really hard this weekend.