21-Is it OK to take this seat? 
-Sorry. _______ 
A. here you are                                 B. take it 
C. it’s taken                                    D. never mind 
【答案】C
【解析】考查交际用语。第一个人想坐座位,但第二人用sorry回答,由此可以判断座位不能坐了,它被占了,选C。A项“给你”的意思,B项“做吧”C项“没关系”,道歉时的答语,这三项都和上下文意思不吻合。
22. When we visited my old family home, memory came ______ back 
A. flooding                                        B. to flood 
C. flood.                                        D. flooded 
【答案】A
【解析】考查现代分词作伴随状语。flooding 伴随came 意思为“记忆洪水般地涌现”,选A恰当。
23. They’ve won their last three matches. ________I find a bit surprising 
A. that                                      B. when 
C. what                                     D. which 
【答案】D
【解析】考查非限定性定语从句关系词的辨析。此处意思是“我发现他们已经赢得了最后的三场比赛,这一点令人有点吃惊”,which代替上句“They’ve won their last three matches”做find的宾语,选D。A项不能用于非限制性定语从句中,B,C此处没有他们的意思。