—Li Ming went abroad in 2000.—No wonder. I ______ him ever since.
It is reported that it is 100 years ______ Qinghua University was founded.
The boy, as well as his friends, _______ watching TV last night.
______ is known to all, Taiwan is a part of China.
It was ______that all of us were tired out when we arrived.
Most people advise that students’ heavy burden __________.