根据课文内容选择正确答案。
1. Sam is______________than Lingling.
[ ]
A. stronger
B. fatter
2. Amy is______________than Lingling.
[ ]
A. taller
B. shorter
3. Amy is______________than Lingling.
[ ]
A. older
B. younger
4. Sam is______________than Daming.
[ ]
A. taller
B. shorter
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