The boat drifted along on the sea for a good hour ()it was safely anchored at the dock.
A.正确答案Abefore
B.when
C.after
D.while
The boat drifted along on the sea for a good hour ()it was safely anchored at the dock.
The boat drifted along on the sea for a good hour ()it was safely anchored at the dock.
A.正确答案Abefore
B.when
C.after
D.while