送交者: 红胡子 于 May 02, 2002 22:07:34:

回答: 答： 由 binbin 于 May 02, 2002 21:32:28:

2. 20x4 + 4x2 = 88
3. n, l, m_z, s_z
4. College students will go to the village
and work in the field tomorrow.

加跟贴