All too _____ it was time to go back to school after the glorious summer holidays.
The United Kingdom of Great Britain ______ three main parts England, Scotland and Wales.
If you make most of every minute in class day after day, there will be switch in grades.
My English teacher gave us a suggestion yesterday, _____is often the case, ______ our monitor organize a debate after class.
Tsinghua University, ______ in 1911, is home a great number of outstanding figures.
It was three months later _____ he completed the job with difficulty.