No matter how hard the worked,______.A.he could not do any better B.but he could not do any better 答案是A我选了B,为什么加but不行?

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No matter how hard the worked,______.A.he could not do any better B.but he could not do any better 答案是A我选了B,为什么加but不行?

No matter how hard the worked,______.A.he could not do any better B.but he could not do any better 答案是A我选了B,为什么加but不行?
No matter how hard the worked,______.A.he could not do any better B.but he could not do any better 答案是A我选了B,为什么加but不行?

No matter how hard the worked,______.A.he could not do any better B.but he could not do any better 答案是A我选了B,为什么加but不行?
A.he could not do any better
因为 No matter how hard the worked 这部分是让步状语从句,后部分是主句,主句和从句之间不能用并列连词but