The boy ______ blue pants _____ my student.A.in … is B.in … are C.on … has
You can’t believe how terrible the fire is _______ you see it with your own eyes.
Driving in rush hour traffic ______ be very dangerous, so you _____ be too careless.
Jerry is always so busy that he can hardly _________ a few minutes to talk with his child.
---________ it is from our own planet Earth to Mars! --- Yes, it takes months to travel to Mars by spacecraft.
—Jim took ___ one-hour ride just now.What a short time he spent finishing such a long way! —He is ______ experienced rider.