72 One third of the forest ___ burnt down by the farmers.

　　A has B have C. has been D have been

　　72 The Greens _____ China for five years.

　　A has been in B has been to C. have been in D have been to

　　73 Neither he nor I ---- going to the park.A be B is C are D. am

　　74 When and where to build the new factory ___ yet.

　　A. is not decided B are not decided

　　C has not decided D have not decided

　　75 The number of people invited ______ fifty , but a number of them ___ absent for different reasons.

　　A. is are B are is C is is D are are

　　76 There are two ___ trees in front of our school .

　　A apples B. apple C apple’s

　　77 --- _____ will you come back? ---- In a week.

　　A How often B. How soon C How long D How far

　　78 Is he the man ____yesterday?

　　A who you met to B .you met C who you talked

　　79 He bought ___ table for his new house.

　　A an old black wood round B. an old round black wood

　　C a round old black wood

　　80 I like my new bike . It ____ very well .

　　A .rides B is riding C is ridden

　　81 A:I don’t think Lucy will come today , ?

　　B: . she is ill and stays at home.

　　A do I , No B will she , yes C. will she , No