---Who cleaned the blackboard yesterday, Dick?-John _________.
A: cleaned
B: does
C: did
A: cleaned
B: does
C: did
举一反三
- you already your room? -Yes.I it two hours ago A: Did, clean; cleaned B: Did, clean, have cleaned C: Have, cleaned; cleaned Have, cleaned; have cleaned
- It was John ______ cleaned the window. A: who B: B. whom C: what D: which
- It __________John and Mike who cleaned the room. A: are B: were C: was D: has been
- It was John ______ cleaned the window. A: A) who B: B) whom C: C) what D: D) which
- ( )your brother cleaned his room yet? A: Is B: Does C: Has D: Did