your composition carefully, some spelling mistakes can be avoided.A.Having check
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________ your composition carefully, some spelling mistakes can be avoided.
A.Having checked
B.Check
C.If you check
D.To check
试题答案
C
解析：现在分词和不定式作状语，其逻辑主语必须是句子主语，填入A或D项意思就不通了，所以应改成if引导的条件状语从句，正确答案为C.例如：If it is fine tomorrow，we will go and visit the museum．如果明天天晴，我们将去参观博物馆.