题目内容：

Complete the following sentences and make sure each pair shares the same or similar meaning. Use one word for each blank.

1.They didn’t climb the mountain due to the bad weather.

They didn’t climb the mountain _____ _____ the bad weather

2.It took Mrs. Christopher three hours to repair her old bike bought two years ago.

Mrs. Christopher _____ three hours _____ her old bike bought two years ago.

3.What surprised her was that the two boys were so alike that almost nobody could tell one from the other.

_____ _____ _____, the two boys were so alike that almost nobody could tell one from the other.

4.Without a map or a compass, the travelers got lost in the forest.

Without a map or a compass, the travelers _____ _____ _____ in the forest.

5.People know that this method of printing has been used as far back as the Song Dynasty.

This method of printing _____ _____ _____ have been used as far back as the Song Dynasty.