Composition:
L49;
1. The man gathered the pieces next morning.
2. He repaired the bed in a painstaking way, then put it on the roof and tird it down.
3.After that he enjoyed many comfortable nights' sleep.
L50:
1.On going into the kitchen, I turned on the light because it was dark.
2.My brother shouted angrily when the lights went on.
3.I spoilt a film which he was developing.
L51:
1.I invited a friend to dinner at an expensive restaurant and we had a good meal.
2.After dinner I asked for the bill.
3.I didn't have enough money, so I had to tomorrow some from my guest.
参考资料：me
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