1、（D）he works hard,I don't mind when he finishes the experie

1、（D）he works hard,I don't mind when he finishes the experienment.
A As soon as B As well as C So far as D So long as
2、We( D)finish the job ,now that we have got so far with it.
A may B might well C could D may as well
注：正确答案已给出,
1、为什么不选C,C也是只要的意思啊,C和D用法上有何区别?
2、为什么选D?may as