—They moved here soon after their son was born.
A：when would the Greens move here
B：when the Greens moved here
C：the Greens would move here
D：when the Greens would move here
外界气体进入肺的途径是（ ）
填空
片字共有____笔，笔顺是____。
若3amb2与-a4bn-1是同类项，求（n-m）2012的值
