Whenever I think of my childhood, I'll always feel that the period of free time seem to have passed ________
.Faced with a problem,you have to ________ it first,and then try to find a solution.
Teaching pronunciation class to a mixed group of learners can ________ a teacher with many challenging problems.
All my pockets have been ________ but I can’t find my keys.
—OK,I’ve had enough of it.I give up.—You can’t________your responsibilities. (2012·江苏,26)
If she doesn’t want to go,nothing you can say will________her.(2012·新课标全国,35)