Many people believe we are heading for environmental disaster _____ we basically change the way we live.
| A．but | B．although | C．unless | D．once |
12．______of the land in that district_____covered withtrees and grass.
A．Two-fifth；is B．Two-fifth；are C Two-fifths；is D Two-fifths；are
11． Nowadays，a large number of women，especially those who conicfromthe countryside，____in the clothing industry"．
A ．is working B．works C．work D worked
10、______ of the land in that district ______ covered with trees and grass.
| A．Two fifth…is | B．Two fifth…are | C．Two fifths…is | D．Two fifths…are |
9、The number of people invited ______ fifty, but a number of them _____ absent for different
reasons.
| A．were, was | B．was, was | C．was, were | D．were, were |
8、When and where to go for the on-salary holiday ______ yet.
| A．are not decided | B．have not been decided |
| C．is not being decided | D．has not been decided |