4 句 改 錯

1

to improve the security ,

cleanliness and maintence of



2+3

their buildings,

the Government has introduced(------------)


the concept of Mutual Aid

Committees(MACs)in 1973.



4

quickly extend to (the) public housing estates

and (the) squatter areas

1: In order to improve the security, cleanliness and maintenance of
2: their buildings, the government has introduced
3. the concept of Mutaul Aid Committees(MACs) in 1973. Flexibility
4: has quickly extended to public housing estates and squatter areas.