In sentence fill-ins, always read the whole sentence up to its end, understand the context, and only then address the grammar point at hand.
在做填空题的时候,要记住先通读句子,理解句中情景,然后敲定语法点。
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There are meant to be substitutes who can fill in for missing colleagues but this means that teaching lacks continuity-and there may not be enough stand-ins to go around.