问题
选择题
— I'm worried about my English.
— ______ harder ______ you will catch up with your classmates. [ ]
A. Working; and
B. To work; or
C. Work; and
D. Worked; or
答案
答案：C
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— I'm worried about my English.
— ______ harder ______ you will catch up with your classmates. [ ]
A. Working; and
B. To work; or
C. Work; and
D. Worked; or
答案：C