问题
翻译题
根据汉语意思完成句子。
1. 他们将在一小时之内到达。
They will arrive_____,
2. 在他五岁的时候，他已经知道地球围绕太阳转。
By the time he was five, he ____ that the earth ____ the sun.
3. 我们将于一周之后完成这项工程。
We _____ the project ____ a week．
答案
1. within an hour 2. had learned; goes around 3. will finish; in