题目内容
单选
I like to hear the bird ________ in the morning.
[ ]
|
A ．singing |
B ．sings |
C ．to sing |
答案：A
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题目内容
单选
I like to hear the bird ________ in the morning.
[ ]
|
A ．singing |
B ．sings |
C ．to sing |