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641.________ the right kind of training,these teenage soccer players may one day grow to be the international stars.
A.Giving
B.Having given
C.To give
D.Given
642.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
