★ KS3-ENLA-WRI-0070正面
'School lunches have become much healthier in recent years.'
提示Look for the sentence that makes a point the rest of the paragraph could go on to prove.
为什么A good topic sentence states an idea big enough to develop with detail. The first is a reaction and the second is a bare fact, so neither gives the paragraph anything to explain.
★ KS3-ENLA-WRI-0070背面