According to scientists, our mental abilities begin to _______ from the age of 27 after reaching the highest level at 22.
-----Is there any possibility ______ you could pick me up at the airport? ----- No problem.
On the contrary, I think it is Truman, ______ you, ______ to blame.
----- Would you rather ______ there tomorrow? ----- No, I’d rather he ______ there instead of me.
Nowadays everyone is responsible for _____ a harmonious(和谐的) society in China.
It is ______ ill health that she is now not so active in the movement.