— I can’t get through to the general manager’s office.—The line is busy. Someone ________ the telephone.

—Look at the sign. You_____ fish here.—Sorry, I didn’t know.

—Congratulations! Among the best pictures in the competition，I found _______. Why did you draw it?一During the trip to the Yellow Mountain _______ May.

Sir, you ________ take this seat. It’s just for the old.

You _____ lose your way if you walk alone in the mountains at night.