重写句子：The teacher returned the homework. The teacher noticed the error.(complex sentence)
The teacher returned the homework when(after) she noticed the error.
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Veryfewpeopleunderstoodthiscontract,______wasveryobscure.
改写病句：Peterorderedthemealforhisfriendsrangingfromfriedshrimptochoppedbeef.
重写句子：Fossil fuels are non-renewable. We need to find alternative energy sources. (compound sentence)
改写病句：Shakespearewrotecomedies,tragedies,romances,andtheplayswhichwerebasedonhistoricalevents.
Ifyou_______inbehavinginthiswayyouwillbringyourselfnothingbuttrouble.
