It's the second time that I __________ in Shanghai ！ What great changes have taken place in Shang Hai. It is ten years since I __________ it last time.
| A．have been ； left |
| B．had been ； left |
| C．have been ；had left |
| D．went ；had left |
I have many friends, __________some are businessmen。
A of them B of whose C of which D of whom
He had been ill for a long time and _________ he was left behind in his work。
| A．however | B．consequently | C．otherwise | D．but |
It was impossible to avoid _____ by his opinion。
| A．affecting | B．to be affected | C．affected | D．being affected |
With so many difficult problems ______, the newly-elected president, Obama, is to have a hard time。
| A．settled | B．settling | C．to settle | D．being settled |
________ around the Water Cube, we were then taken to see the Beijing National Stadium, known as the Bird’s Nest。
| A．Having shown | B．To be shown | C．Having been shown | D．To show |