In summer,you can see plenty of butterflies [ ] in the garden .a.to fly b.flying c.flies d.fly
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B======以下答案可供参考======
供参考答案1:
Bsee 的结构用法有
see sb/sth do 或者 see sb/sth doing
此处用see doing 表示一个动作 蝴蝶飞的动作
供参考答案2:
flying
see sb/sth doing sth看......正在做某事
see sb/sth do sth看......做了某事
供参考答案3:
选BSee sb doing,
感官动词后都要加动词ING