题目内容：
以下是某老师在语法课(比较级)的操练环节让学生做的所有练习。1. Fill in theblanks with the right word.
(1) Julia is 13 years old, and Iam 10. So Julia is_______than me.
(2) --Is Tim_______(outgoing)than Jim? --No, Tim is very shy.
...
2. Correct theerrors in the following sentences. (There is only ONE mistake in eachsentence.)
(1) Lucy has long hair thanLily.
...
根据所给信息从下列三个方面作答。
(1)以上属于什么练习?请简述此类练习的优缺点。(8分)
(2)除了以上练习形式外，语法练习还有哪些形式?(14分)
(3)根据以上评析，为该练习环节补充一种有效的语法练习活动。(8分)
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答案解析：