_____ a lot of small ads are put up on the walls, out city will be untidy.
He drives in heavy traffic every morning. He’s tired of ______ a place ______.
--- Have all the students known that we will have an English exam this Saturday?--- Yes. Every student ______ about it.
It’s ______ to make milk shake than to make jiaozi.
You’ll certainly feel lonely ______ you communicate with your friends sometimes.
--- Where’s Jenny?--- I’m not sure. She ______ in the school library.