问题：
—Would you like to go to the concert with me?
—I"d love to, _____ I"m afraid I have no time.
[ ]
A. so
B. or
C. and
D. but
—Would you like to go to the concert with me?
—I"d love to, _____ I"m afraid I have no time.
B. or
C. and
D. but
—I"d love to, _____ I"m afraid I have no time.
[ ]
A. so B. or
C. and
D. but
参考答案：