根据句意，用所给的单词适当形式填空。
Qian Xuesen’s death was a great _______ (lose) to the whole world.
My grandpa also has a QQ though he is in her____________ (sixty).
What great ____________ (suggest) you offered me! Thank you.
After a short          (silent) ,he went on speaking.
The young film star’s       (die) is a great loss to the film industry.