As we grow up, it always _______ that after we give something up, we gain something new in its place.
It is usually warm in my hometown in April, but it ________ be rather cold sometimes.
You should be ________ a diet; otherwise you will get fatter and fatter.
The student _____ from the training so much that he was _____ the first prize in the game.
Some students even have no idea of they are studying, so they waste much time playing.
If you ________ smoke in the room, please keep the windows open.