改错They are try to find a way to solve the problem._______ 要写出正确单词

问题描述:

改错They are try to find a way to solve the problem._______ 要写出正确单词

你这个应该是现在进行时,try是动词,应该在try后面+ing,不能直接不变接be动词

they are trying to find a way to solve the problem.
现在进行时要用trying