______ those troublesome messages, you’d better not give out your number to anyone whom you don’t know.
| A．Avoiding | B．Avoided | C．Having avoided | D．To avoid |
The population of China ___ over one thousand million.
| A．is | B．are | C．has | D．have |
I hace no pen ___.
| A．to write with | B．to write | C．to write on | D．for writing |
--What did you arriver here? ---Just ___ when he married.
| A．in the same morning | B．on the night | C．at the night | D．on very afternoon |
—____ you got to know I traveled to USA?
—Through one of your colleagues.
| A．Where it was that |
| B．When was it that |
| C．How was it that |
| D．Why was it that |
Having failed in many attempts,the bird _____managed to escape from the cage.
| A．suddenly | B．naturally |
| C．immediately | D．eventually |