The achievements we have made are largely ___ the hard work of our parents and teachers.
— I'm not the man ________the phone. She asked for Henry. — I'm sorry I was mistaken.
The step you have taken is ________ much risk(冒险).
We've always known him ________ a warm but calm character.
Now that he has missed his ________, he'll have to wait for the next round.
— Were you worried about him last night? — Yes. It was ________.