Can you see two butterflies in the middle of the flowers?A. are there flyB. there are f

问题补充：

Can you see two butterflies in the middle of the flowers?

A. are there, fly

B. there are, flying

C. there are, fly

D. are there, flies

答案：

A. are there, fly

(答案→)B. there are, flying

C. there are, fly

D. are there, flies

解析：句意：你看见有两只蝴蝶正在花中飞吗？There be .......doing ....有.....正在做某事。there be 句型变成一般疑问句是需把be动词提前。