问题描述:
用以下的句型
what happened first was that...
...happened as a result of...
you could expect...because...
that led to...
one of the reasons why...is...
...is often followed by...
what happened first was that...
...happened as a result of...
you could expect...because...
that led to...
one of the reasons why...is...
...is often followed by...
问题解答:
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