_______ can make people happy and want to make greater progress.（　　）

﹣﹣﹣Your spoken English is perfect!

﹣﹣﹣Thank you.I think _______ is better.You read English every morning.（　　）

Our teacher often warns us it's ______ to leave much personal information on the Internet.（　　）

Cathy always makes good use of her time to study，even _______ her lunch break.（　　）

Your dad has just fallen asleep.Don't wake him up ______ it's really necessary.（　　）