Obesity is ________ major concern for public health officials and also may affect ________ test scores of students.

Excuse me. _________ do you say “autumn” in American English–It’s “fall”.

This is _____ best kind of _____ pen you can get here.

How lucky the boy is!—Yes .He avoided _______himself in the accident .

eng Square is one of _____ largest inChina, _______second to Tian’anmen Square.