单项选择。
21.Those who__________in__________compositions,please hand them in this afternoon.
A.hasn't handed;his B.haven't handed;their
C.has handed;their D.have handed;his
22.Jane is one of the best students in her class who__________by their teacher.
A.are praised B.is praised
C.praised D.praising
23.On the wall__________two large portraits.
A.hang B.hangs C.hanged D.hanging
24.I,who__________your teacher,will try my best to help you with your study.
A.be B.am C.are D.is
25.John has two brothers,but either__________out of work now.
A.are B.is C.has D.have
26.The police__________the murderer everywhere when he suddenly appeared in a theatre.
A.is searching for B.were searching for
C.are searching for D.were searching
27.About 40__________of the population of that country__________on farms.
A.percent;lives B.percent;live
C.percents;live D.percents;lives
28.The Olympic Games__________held every__________years.
A.is;four B.are;four C.is;five D.are;five
29.__________a good enough price for this book.
A.Two yuans are B.Two yuan are
C.Two yuans is D.Two yuan is
30.Every means__________prevent the water from__________.
A.are used to;polluting B.get used to;pollution
C.is used to;polluted D.is used to;being polluted
参考答案：21.B 22.A 23.A 24.B 25.B 26.B 27.B 28.B 29.D 30.D
