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Not until he went through real hardship _____ the love we have for our families is important.

---How about going for a walk?
--- ________ great. Let’s get going.

--– Who should be responsible for the accident?
--– The boss, not the workers. They just carried out the order ________.

Occasions are quite rare ________ I have time to spend a day with my kids.

Parents should pay attention to areas ______ their child is having difficulty and spend extra time helping him or her.

I borrowed several books from the library, ________ are about English study.

----What’s the matter with Della?
---- Well, her parents wouldn’t allow her to go to the party, but she still ____.

---- Here____! Where is Xiao Liu?          
　 ---- There____.

The new technology, if____ to farming, will help increase the grain output.

Only after Mary read her composition the second time ____ the spelling mistake.