中国大学MOOC: While we were climbing the hill, the rain began to fall.
举一反三
- While we were climbing the hill, the rain began to fall.
- While we were climbing the hill, the rain began to fall.
- While we were climbing the hill, the rain began to fall. A: 正确 B: 错误
- 中国大学MOOC: Soon it began to _____ heavily and we were immediately all ____ through and through.
- No sooner had we arrived () it began to rain heavily. A: as B: when C: than D: while