“Where Are We Going? Dad” is a Chinese reality TV show broadcast on Hunan Television, _____ 75 million viewers every week.

The form ______in and returned within three weeks.

Though ____a difficult and even dangerous place , Vietnam is now a friendly destination that welcomes visitors from all over the world _______.

_______, according to the instructions, the medicine, I think, will work on your headache before long.

 It is said that sixty percent of all energy ________ in the world today is being lost as wasted heat.