【Boyce Shen】評論
Ｂ應改成 Do you know who that man is at the door?Ｃ應改成 Do you know how we can make our English better?
【郵便局™の瑋】評論
Do you know what主詞 has happened動詞 to Martin 反正只要遵循Do you know S+V就對了
【陸攸瑚】評論
B不是: who that man at the door is ? 嗎
【鍾明偉】評論
B應該是who that man at the door is?