By the 10 century, Old English __________ the official language of English.

on the top of the mountain is an ancient tower dating back to hundreds of years ago .

He asked ______ they wouild hold themeeting _____ it rained the next day

The last question in the maths test yesterday was far _____ me．I couldn’t work it out _____my own

Tan Dun is _______ an excellent composer _______ he can make music without boundaries.