---It’s good for you to _______ in class.--- I think so. Thank you.
Everything comes to life when spring __________.
Thanks to the rescue service’s timely arrival, we are still __________ after the terrible natural disaster.
Vivien worked very hard at all her lessons. __________, she became the top student in her class.
— Look! The girl __________ long hair is building a snowman. Is she Sandy? — It __________ be her. I’m not sure.
— __________ volunteers will be needed for 2014 International Horticulture Exposition (国际园艺博览会) in Qingdao.— Let’s go and join them.