第1题：
indeed
so
much less
much more
第2题：
第3题：
第4题：
第5题：
第6题：
He missed the tuition due date.
He has not been paid.
His bank lost his paycheck.
His tuition payment got lost.
第7题：
第8题：
the way sleep deprivation affects health.
the link between sleep and heart diseases.
the hormones and chemicals changes in the body.
the importance of sleep for good health.
第9题：
if
so
what
that
第10题：