Only then, _____we ____that the trapped miners were in danger when the flood water dripped into the tunnels.
A.have; realized | B.did; realize |
C.do; realize | D.had ; realized |
推荐套卷
Only then, _____we ____that the trapped miners were in danger when the flood water dripped into the tunnels.
A.have; realized | B.did; realize |
C.do; realize | D.had ; realized |