Researchers are now conducting hibernation experiment and can use chemicals to put living cells into sleep-like state_____ they don’t age.

_______ does it take you to get to Hainan by plane—Three hours.

Look at the clouds , so beautiful !– Wow , so many different ______ , horses , sheep , flowers…

Eating properly and exercising _______ make one enjoy a longerand healthier life

Iwonder why Ann didn’t get the jobShe is the right person for it