—Dad, will you buy me a new bike?
—I don't know. I'll have to______ it. [ ]
A. think of
B. think about
C. think for
D. think out
答案:B
—Dad, will you buy me a new bike?
—I don't know. I'll have to______ it. [ ]
A. think of
B. think about
C. think for
D. think out
答案:B