Although the tradition of drinking tea dates back to more than 3,000 BC in China, it was not until the mid 17'th century in the UK appeared the concept of "afternoon tea".
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.
He tried his best to solve the problem, _______difficult it was.