.“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
. Some birds fly_______________in winter and some stay in the north.
The book,_______________as a surprise for his sister was lost in the mail.
Between the two roads_________ a TV tower called“Skyscraper Tower”.
________________ surprised us very much that Tom should have left without a word.
It is reported that two schools, _________are being built in my hometown, will open next year.