They cleaned their classroom ____ .
A: three hours
B: on three hours
C: three hours ago
D: three hours later
A: three hours
B: on three hours
C: three hours ago
D: three hours later
举一反三
- I cleaned my classroom ___________. A: with three hours B: three hours ago C: in three hours D: three hours before
- I cleaned my classroom _____. A: three hours before B: three hours ago C: in three hours
- in the following three hours
- Three hours ______ enough for us to finish the task.
- It took us quite a long time to get here. It was ________ journey. A: three hour B: a three hour C: a three hour D: three hours