My uncle lives in a tall building _____ [ ]

My father has worked for 20 years in the field ofmedicine, so he has_______ a huge amount of experience.

Would it be ______ for you to pick me up at oneo’clock and send me to the school

Although the man is old，he is still ________ control of the company.

Mummy, I have broken my train.一I told you so. You _______ on it.