1. It takes him two hours to repair this bike. (using "Gerund")
=> He spends .....................................................................................
2. He did all this homework, and then he went to the stadium. (past perfect)
=> By the time .....................................................................................
3. Doing morning exercise is very good for our health. (To - infinitive)
=> It's .....................................................................................
4. She ca earn enough for her living. That makes her parents happy. (Which as a connecter)
=> .....................................................................................
5. Mary received her friend's e mail five months ago. (Wh-q)
=> .....................................................................................