. I don’t smoke now, but I ____for almost ten years.
| A．ever smoked | B．have ever smoked |
| C．had ever smoked | D．was ever smoking |
In the ant city, you will see many problems _____ in this way.
| A．settled | B．settling | C．to be settled | D．to be settling |
From his _______expression, we can guess that the problem maybe was quite _______.
| A．puzzled ; puzzling | B．puzzling; puzzled |
| C．puzzled; puzzled | D．puzzling; puzzling |
I have had my bike ___ , and I'm going to have somebody ___ my radio tomorrow.
| A．repair; to repair | B．repairing; to be repaired |
| C．repaired; repair | D．to repair; repairing |
I'm afraid that I can't make myself ___ be cause of my poor English.
| A．understand | B．understanding | C．to understand | D．understood |
Our class _______ 55 students at that time.
| A．consisted of | B． consists of |
| C． made up of | D． was consisting of |