问题
选择题
John _____ a doctor when he _____ up.[ ]
A. is, grow
B. are, grow
C. is going to be, grow
D. is going to be, grows
答案
答案：D
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John _____ a doctor when he _____ up.[ ]
A. is, grow
B. are, grow
C. is going to be, grow
D. is going to be, grows
答案：D