A________ is the best form of defence.
He is troubled in________(精神)．
Evidence________(表明)that the experiments were unsuccessful.
David watched her car until it________(消失)from view.
The government say they have reduced personal taxation, but I would dispute this________(声明)．
It is________(吓人的)even to think of the horror of nuclear war.
She gave me a________(神秘的)look.