Shall we go out for a swim?—Sorry, I can’t. I ______ housework for my mother now.

Amy, I bought a dress made _____silk yesterday.—Wow, it looks lovely _____ you.[ ]

The Whites ___________ many places of interest since they came to China.

Alice, please tell Eric to call me when he _____ back. –No problem.

volunteers are working for 2014 International Horticulture Exposition in Qingdao.