David, your mother’s birthday is _____. Let’s think about how to celebrate it.—OK, Dad.

My father likes watching me _____ in the river. [ ]

.“There is a great potential for the development of Sino-U.S. trade, ______ is in line with the interests of the two countries and their people,” Wu said

Word came ______ our duties would be changed.

Michelle with her children arrived in Beijing on March21. She started visit to China.