—Isn’t that your boss over there?
—No, it ________ be him. I’m sure he is in the office now.
| A．can’t |
| B．must not |
| C．won’t |
| D．may not |
—Hold the ladder for me!
—That’s_________.
| A．all | B．it | C．all right | D．complete |
The president stood by a window inside the room, ____, looking over the square.
| A．where I entered | B．into which I entered |
| C．which I entered | D．that I entered |
As time went by, the plan stuck ____ fairly practical.
| A．to proved | B．to proving | C．proved | D．to be proved |
It was believed that things would get worse, but ____ it is they are getting better.
| A．before | B．after | C．because | D．as |
The students spent as much time getting trained as they ____ studying.
| A．disliked | B．were | C．had | D．did |