21. The _________ on her face showed that she was in low spirits.
A. appearance B. impression C. attitude D. expression
22. I don’t __________ the price, as long as it’s within the walking distance of my son’s school.
A. care for B. care about C. agree with D. agree on
23. The old town has narrow streets and small houses ________ are built close to each other.
A. they B. where C. what D. that
