一,你把所有的数加起来就会知道结果【add up】

能看出那个对,那个错,是自己能写出来的前提.
提醒一下,不能有双谓语,谓语动词前后一致,等等.
1 You'll know the answer after adding up all the numbers.
2 We tried hard to calm him down,but he still yelled excitedly.