选择正确的英文句子。
1. 他们正在干什么？
[     ]
A. What's it?
B. What are they doing?
2. 这是李明的家庭。
[     ]
A. This is Li Ming's family.
B. This is Li Ming.
3. 他们正在玩。
[     ]
A. They're singing.
B. They're playing.

参考答案：

A

选择正确的英文句子。
1. 他们正在干什么？
[     ]
A. What's it?
B. What are they doing?
2. 这是李明的家庭。
[     ]
A. This is Li Ming's family.
B. This is Li Ming.
3. 他们正在玩。
[     ]
A. They're singing.
B. They're playing.

参考答案：

A