Our teachers are very friendly to us.We________friends since three years ago. A.have been B.have become C.would be
As students, ____, we should study hard to be well prepared for the future.
The maths problem was so difficult that none of us could ____.
— Can you show me the _____ of your school on the map?— Sure. It’s here, next to the park.
To invent a new kind of electric light, Thomas Edison did lots of ____.
The Kings have been in Beijing for three years, so they are familiar ____ the city.