the boy is young ,but he can work________the difficult maths problem(填介词)

问题描述:

the boy is young ,but he can work________the difficult maths problem(填介词)

out
work out 解决;算出

out
计算出,克服

填out,因为:work out算出;题意为这个男孩很年轻但是算不出这个简单的数学题