You ought to hwhat I asked

Tom put his heart into the wildlife research, and finally, his efforts ______ him great success and fame.[ ]

When I _______ in the kitchen, nothing made me feel better than preparing the eggs and serving them just the way the customers wanted.

He is the only one of the students in our grade who ___ a winner of scholarship for three years.

Crossing the street is very dangerous, _______ remember to look both sides.