He failed to join in the game because he suddenly fell ill. (就划线部分变成强调句)
My teacher said，“Practice makes perfect.”（变直接引语为间接引语）
The students will not pass the exam. They don’t work hard. (合并为含定语从句的复合句)
I have to go to work by taxi because my car                    ( repair ) at thegarage now.(用所给动词的正确时态形式完成句子)
患难之交才是真朋友。（翻译成英语）