听力原文:M: It's already 7:45. Have the children left for school yet?W: Tim left 20 minute
听力原文:M: It's already 7:45. Have the children left for school yet?
W: Tim left 20 minutes ago and Shelia, late as usual, 10 minutes later.
Q: At what time did Sheila leave?
(8)
A.At 7:45.
B.At 7:35.
C.At 7:25.
D.At 7:15.