21. As ______ unemployment is very high at the moment, it’s very difficult for people to find
______work.
A. the；/ B. /； / C. the； a D. an； the
22. — Who is making so much noise in the garden?
— ______ the children.
A. It is B. They are C. That is D. There are
23. Yesterday I was walking downstairs when I missed my foot and had a bad fall, nothing serious, ______.
A. even B. either C. then D. though
