Our maths teacher ____ in our school for 20 years and he ___
Our maths teacher ____ in our school for 20 years and he _______ here when hw was 23 years old.
A.has taught;has comeB.taught;comesC.taught;cameD.has taught;came
A.has taught;has comeB.taught;comesC.taught;cameD.has taught;came
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