Jumping out of _______ airplane at ten thousand feet is quite _______ exciting experience.
| A．/; / | B．/; an | C．an; an | D．the; the |
---I wonder what makes you a good salesperson
---I _______ as a waiter for three years , which helps my today’s work a lot.
| A．serve | B．have served |
| C．served | D．had served |
The textbooks ________ for teaching English as a foreign language came out in the 16th century.
| A．having written | B．to be written |
| C．being written | D．Written |
If the wound _______ become swollen, do not hesitate to call me.
| A．shall | B．must | C．should | D．Would |
He ______ to get out of trouble, but no one would help him.
| A．succeeded | B．attempted |
| C．managed | D．Offered |
Our class _______ more than 70 students.
| A．builds of | B．is made up |
| C．consists of | D．is consisted of |