---- Putting on a happy face not only helps us make friends but also makes us feel better.---- _______.
If nothing______, the oceans will turn into fish deserts.
The Philippines lies ______ the south of China, but Guangdong Province lies ______ the south of China.
In the dark forests______, some large enough to hold several English towns.
—I hear you saw the film Taijiong last night. ______? —It’s totally fascinating.
----Hi, can I speak to Mr. Brown now? ----Sorry, but he is not ______. He’s having a meeting now.