请根据以下回答选择合适的问句。 --- Why are they so keen on green？

A.They are 'building a 'greenhouse.

B.They are 'building a 'green 'house.

C.'They are 'building a 'greenhouse.

D.'They are 'building a green 'house.

A.Where did they fly to？

B.Who flew to Shanghai？

C.How did they go to Shanghai？

D.Did they flew from Shanghai？

A.Can you show me the blueprint？

B.Can you show me the blue print？

A.J'ai un frère et une soeur.

B.J'habite avec mes parents.

C.J'ai une voiture.

D.J'ai vingt-quatre ans.

A.Where did they fly to？

B.Who flew to Shanghai？

C.How did they go to Shanghai？

D.Did they flew from Shanghai？

A.Where did they fly to？

B.Who flew to Shanghai？

C.How did they go to Shanghai？

D.Did they flew from Shanghai？