1¡¢__________ is important is that we let others know we care about them.

2¡¢It suddenly occurred to him__________ he had left his keys in the office.

3¡¢Your support is important to our work. __________you can do helps.

4¡¢Over the next several months, my professor taught me __________one story was so much better than the other.

5¡¢Our English teacher told us to find out __________the differences between American English and British English lie.

6¡¢A ship in harbor is safe, but that's not__________ships are built for.

7¡¢We have learned from the story that __________is the most valuable is not what we have in our lives but __________are in our lives.