— Why are you so popular with your students?— As a teacher, I seldom give my students so difficult a problem ____ they cannot work out.
. —— The plane will take off in half an hour. I’m afraid I must be going now. —OK. ________.
. The boy often gives a satisfactory answer to the teacher’s question, _____ just a minute. So he’s usually the teacher’s pet.
. Learning experiences happen to us throughout our lives, and not too long ago, I had______ that I would like to share.
. “There is a great potential for the development of Sino-U.S. trade, ______ is in line with the interests of the two countries and their people,” Wu said
. The talk between the two leaders aimed at ending the long _____of war between the two countries.