I tried very ____to work it out .

I tried very ____to work it out . this question is very ( )i can work it out（ ） I am very tried after doing so much work 改错 This math problem is very easy.I can work it out.合并为一句 The Maths problem is very e______ .I can work it out mysulf. 改错This math problem is very difficult but I can work out it. The maths problem is very difficult,.I work it out,though 为什 the-----is very difficult,I can not work it out用question 还是p The math problem is not very difficule.I can work it out e__ I tried my best to work out the maths problem but I failed.同 英文翻译：I can work it out. _______ I felt very tired,I tried to finish the work A.Altho