问题
选择题
---Where’s Mabel?
---She _____ ping pong behind the teaching building.
A.is playing
B.was playing
C.played
D.had played
答案
答案:A
---Where’s Mabel?
---She _____ ping pong behind the teaching building.
A.is playing
B.was playing
C.played
D.had played
答案:A