請問兩題托福文法改錯

The migration route of the first humans to occupy North America took them across a land bridge that once was connected Asia with what is now Alaska.           為什麼was connected 錯?     them across沒有錯嗎?                                                                     As moist air in a warm front ascends the... show more The migration route of the first humans to occupy North America took them across a land bridge that once was connected Asia with what is now Alaska.           為什麼was connected 錯?     them across沒有錯嗎?                             ...‡  As moist air in a warm front ascends the retreating wedge of cold air, it cools to produce cloudy and frequently causes precipitation.                          ...‡
4 answers 4