You didn’t take his advice. ____ his advice, you _____ such a mistake.
| A．Had you taken; wouldn’t have made | B．If you had taken; would make |
| C．Were you to take; shouldn’t have made | D．Have you taken; won’t have made |
The poor man’s life was _________ the king.
| A．at the mercy of | B．at the call | C．at the service | D．at the experience |
Jumping out of ______ airplane at ten thousand feet is quite _______ exciting experience.
| A．/; / | B．/; an | C．an; an | D．the; the |
The company was named Gates Hall ______ a man named James Gates.
| A．in need of | B．in search of | C．with the help of | D．in memory of |
--- Where is Jack? I can’t find him anywhere.
--- He ______ his homework upstairs.
| A．might have done | B．must have done | C．might be doing | D．must do |
She___ taller, but she ate too little.
| A．can grow | B．can have grown | C．could grow | D．could have grown |