________ more countries can use natural energy in future ________ to he seen.
A.Whether; remains
B.What; remains
C.Who; remained
D.If; remains
对258人提供帮助
主语从句。
________ more countries can use natural energy in future ________ to he seen.
A.Whether; remains
B.What; remains
C.Who; remained
D.If; remains
对258人提供帮助
主语从句。