Schools across China are expected to hire 45000college gradudates this year as short-term teachers,almost three times the number hired last year,reduce unemployment pressures.1.help 2.to have helped 3.to help 4.having helped

问题描述:

Schools across China are expected to hire 45000college gradudates this year as short-term teachers,almost three times the number hired last year,reduce unemployment pressures.
1.help 2.to have helped 3.to help 4.having helped

3. to help 用不定式表示目的 ,目的状语从句

to help啊,表目的的,当中的almost three times the number hired last year是插入语,不影响选择的.