When Mr Wang was young, he________ in the river.
—Do you like the city life or the country life? —It's hard to say. In the city there is _____interesting, but in the country there is _____ pollution.
____ people ____ robots in their home in 100 years ?
He is happy that he _____in a tall apartment next year.
–Alice hurt her leg. – She should ___________.
– Do you know how many _____ a horse has and how many _____ a bee has?--- Of course, I know.A teeth, feet B tooth, foot C foot teeth D teeth, foot