—What are you going to do when you grow up?—A singer,but my parents wish me ________ a teacher.
They looked _____ each other and kept their secrets _____ themselves.
Jack had a wonderful time _____ many interesting places in Beijing and he had much time __________ the city.
I have some problems __________ my homework. Could you tell me _____?
The girl _____ a smile on her face is always kind _____ others.
This text is _____ easier and _____ interesting than that one.