---He spent as much time as he could __________ his spoken English. --- Wish him

题干

---He spent as much time as he could __________ his spoken English.
--- Wish him good luck !

A．improve

B．improving

C．to improve

D．improved

上一题下一题 0.94难度单项选择更新时间:2011-10-30 06:35:51

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