用所给词的适当形式填空。
Our teacher advises us ________ (study) hard.
We often see him _____ (play) football on the playground.
We must make computers ______ (serve) us better.
My parents told me not _________ (spend) too much time watching TV.
I saw him _______ (play) basketball when I passed the playground.
The man used to be a taxi________(drive),but now he is a teacher.
The man is so________(power)that nobody can beat him.
The city is________(fame)for its beautiful views.
He was a little unhappy because he failed the________(exam)again.
He’s shy and feels________(comfortable)among girls.