Lreduce the risk of heartattacks.

A healthy friendship isone____you share your true feelings without fearing the end of therelationship.

If my sister goes to watch the singing competition named “I am a singer” next time, _______. The competition is well organized.— _______.

With modern technology, even babies weighing _______one kilogram at birth can survive.

Tom, your shirt is so dirty!— Mum, I _____ my storeroom downstairs。