问题
选择题
__________ matters most in learning English is enough practice.
A．What
B．Why
C．Where
D．Which
答案
A
what在此引导主语从句，相当于the thing that。
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__________ matters most in learning English is enough practice.
A．What
B．Why
C．Where
D．Which
A
what在此引导主语从句，相当于the thing that。