This is bike. number is K2678.
A：a; It's
B：An; Its
C：my; Its
D：my; It's
这场会战后，德军完全丧失了苏德战场的战略主动权，正如德国陆军总参谋长蔡茨勒将军所说的：“我们……损失25万官兵，那就等于打断了我们在整个东线的脊梁骨。”这场会战是指（ ）
A great number of students said they were forced to practise the piano.
为了控制人口数量和提高人口素质，____ 已被定为我国的一项基本国策，鼓励____、____、____ ．
