Happy birthday!—Thank you！It’s the best present I________for.(2012·江苏，35)

Which scarf is ______, the green one or the blue one

Never form the habit of smoking because it ______ human beings.

Many social workers went to Ya’an to ______ cleanwater and food to local people to reduce their pain from the earthquake.

How do you learn English sowell–____ chatting with my uncle in Americaonline.