work out,put up1.i thought hard,and______the math problem at last hard1.i thought hard,and______the math problem at lasthard2.they _______ their tent near the lake last night

work out,put up1.i thought hard,and______the math problem at last hard
1.i thought hard,and______the math problem at last
hard
2.they _______ their tent near the lake last night

1.work out 解决
2.put up 搭起