问题
_______sending emails, I’ve kept in touch with my American friend for many years.[ ]
A: In exchange for
B: On behalf of
C: In return for
D: By means of
B: On behalf of
C: In return for
D: By means of
正确答案是：
同类题型
He is a politician and has a delicate sense of the current affairs all over the country．
the professor’s talk got____ to dowith your present researchYes, it has____ to do with my research.
Our English teacher is back home from Britain now.–Yes, she _____there for just three months
Would your brother go for a picnic. —If I don’t go,__________ .
You’re not angry then —_____ I’ve never laughed so muchin my life