He was obliged to ______ the trade of shoemaker.

How do you like the movie Kung Fu Panda？——It’s so touching I have never have seen ____ one

I think whoever makes _____ contributions to the company than the others should get _____ income. [ ]

ou enjoy meeting your old schoolmates at the party last week—Yes, I did. We ________ each other since we graduated from college.

_____ for a long time, most of the crops in this area died from lacking water.