Make sure the gas is turned off after a bath, which would ________ cause danger

This hospital needs ____X-ray machine, _____ machine is used for checking for patients.

Jim finds Geography and he can find places while travelling．

Don’t be angry with your student when he or she makes a mistake again, will you—No, I won’t. I know that ________ of us is perfect after all.

can we find your brother at weekends— On the football field。