题干
Please call me ______ 0512-5123 4567 or email me ______ lily@changshu.com.
A：on; at
B：at; on
C：by; on
D：on; on
答案(点此获取答案解析）
B
Please call me ______ 0512-5123 4567 or email me ______ lily@changshu.com.
A：on; at
B：at; on
C：by; on
D：on; on
