1 . 我不能和你外出是因为我必须照顾我生病的爷爷。
________________ I have to care for my sick grandfather.

2 . 我没对这次写作比赛做充分的准备，这是我不想参加比赛的原因。(一句多译)
a．________________ I haven’t made full preparations for this writing contest.
b．I haven’t made full preparations for this writing contest, ________________.
c．I am unwilling to take part, ________________ this writing contest.

3 . 今年春季我国所有学校推迟开学的原因是新冠病毒在全球爆发。

___ ___ ___ all schools in our country delayed opening this spring is ___ the novel coronavirus broke out all over the world.

4 . 另外，我心情不好的原因是我多次拨打您的客服号码，结果被反复告知占线。(in a bad mood) (汉译英)

5 . The reason ___________ you gave an account of is not believable, so I am still feeling curious about the reason ___________ you were absent from today’s assembly. (用适当的词填空)

6 . 我们应该读名著。这是因为阅读经典可以丰富我们的日常生活，减轻我们的压力。（一句多译）
(1) Reading classics can enrich our everyday life and relieve our pressure. ________________ we should read classics.
(2) We should read classics. ________________ reading classics can enrich our everyday life and relieve our pressure.
(3) The reason ________________ reading classics can enrich our everyday life and relieve our pressure.

7 . 体育节之所以成功，是因为每个班都在努力训练为这次盛会做准备。(用名词性从句翻译)

8 . 他继续这个实验的原因，是因为他希望能成功的完成这项任务。(定语从句)
The reason ___________ was that he was in the hope of completing this task successfully.

9 . 当然，他们如此兴奋的主要原因是熊猫实在是太可爱了！(the reason why...is that...)
And of course, ________________ pandas are just so cute!

10 . 为了看完一本新书，这就是凯特昨天整晚熬夜的唯一原因。(汉译英)