Since Shanghai won the right to host the World Expo, over half a million people have volunteered to ___________in all the Shanghai Expo projects .
You should study the details of the policy before you sign it.
Many parents made their daily routine to get out for a walk in the evening.
Eat-up Campaign has became hot topic, calling for people to takeaction against waste.
The good thing about children is that they ___________ very easily to new environment.
She heard a scream, _______ brought her heart into his mouth.