Schools across China are expected to hire 50,000 college graduates this year as short-term teachers，almost three times the number hired last year，________ reduce unemployment pressures．
A．help B．to have helped C．to help D．having helped
Schools across China are expected to hire 50,000 college graduates this year as short-term teachers，almost three times the number hired last year，________ reduce unemployment pressures．
A．help B．to have helped C．to help D．having helped
C