________ of giant pandas is getting _________ becausetheir living areas are becoming farmland.

19 It is reported that China has created the first man-made sun in the world recently, ______ ?

______________ that my dearest friend would play a trick on me in front of all my students.

The water is not enough. Add some more sugar, please.

When he retells a story , sometimes he ___________ the key points.