根据句意，在答题卡标有题号的横线上，写出括号内所给单词的适当形式。
We felt strange about his        ( silent) at the party as he used to be very outgoing.
“Will it be possible to get me another ticket?” he asked        (hopeful).
Rub this oil into your skin and your headache will soon      (appear)! Have a try!
It’s said that Chinese parents are         (strict) with their children than American parents.