单句改错。
在错的词下划一横线，在该行右边横线上写出改正后的词(每句均有一个错误)。
1. What the earth travels around the sun is known to us all. 1. ______
2. The ruler that he bought yesterday was lain on the table. 2._______
3. He returned in the afternoon of his birthday. 3. _______
4. He spoke too rapidly that we couldn't clearly understand him. 4. _______
5. He shouldn't have gone abroad, for I saw him in the part this morning. 5. _______
