Why did Miss Wang look so worried when we saw her?

Why did Miss Wang look so worried when we saw her?
Because she wondered--------
A.where did the other students go B.when would the policemancome
C.what her students have done during the trip
D.if her students had survived the earthquake
The plane hasn't arrived yet.Could you tell me ______?
A.why the plane is late B.how is the plane late
C.when will the plane arrive D.that the planearrives
you are growing so fast.can you tell me _______now?
A.hoe fast are you B.hou fast you are
C.how tall are you D.hou tall you are
Can you tell me ________the machine without any help?
A.what did he repair B.what he repaired
C.how did he repair D.how he repaired