问题
. If law and order _____, neither the citizen nor his family is safe.
A:are not preserved
B:is not preserved
C:were not preserved
D:have not been preserved
B:is not preserved
C:were not preserved
D:have not been preserved
正确答案是：
同类题型
The book was written in 1946, ____ the education system has witnessed great changes [ ]
I haven’t seen you since you came back fromholiday. ________ a nice time
They woke up _____ everything around _____. [ ]
Who is singing in the next room Is it Amy—No, it be her. She has gone to Yunnan on holiday.