改错my brother is thin and high.()

改错my brother is thin and high.()
a.my brother b.thin c.and d.high
单选()i can,t understand the passage_there are many new words in it.
a.because b.because of c.but d.so
()she doesn't come to the party today,she _ busy.
a.maybe b.may be c.not to go d.don't go