问题
选择题
What he has learned through practice before _____ him a lot in his future work.
A．helping
B．helped
C．it helps
D．will help
答案
答案：D
before这里是副词,不是介词,也不是连词,所填词实际是谓语动词.
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What he has learned through practice before _____ him a lot in his future work.
A．helping
B．helped
C．it helps
D．will help
答案：D
before这里是副词,不是介词,也不是连词,所填词实际是谓语动词.