几道英语选择题(状语从句)

问题描述：

几道英语选择题(状语从句)
1 we will never give in-----they might do or say about our plan.
A no matter how B how C howere D whatever
2 though he is in his sixties,----he works as hard as a young man.
A if Bwhen C where D though
3 --------unemployment and crime are high ,it can be assumed that the latter is due to the former.
A before B where C after D until
不好意思，第二题应该是A yet B but C and D and yet