_____ we stood at the top of the building, the people below were hardly visible.
| A．As | B．Although | C．Unless | D．In spite of |
To avoid on how to use the word, you’d better refer to a dictionary.
| A．to get confused | B．getting confused |
| C．to get confusing | D．getting confusing |
Some insects________the colour of their surroundings to protect themselves.
| A．take in | B．take off |
| C．take on | D．take out |
There is a shortage of teachers in Western China, and it will fall on the 80s and 90s generations to this responsibility.
| A．take on | B．step up |
| C．make up | D．apply for |
Only when he reached the tea-house ______it was the same place he’d been in last year.
| A．he realized | B．he did realize |
| C．realized he | D．did he realize |
Only when he told me________what trouble he was in.
| A．did I realize | B．I realized |
| C．do I realize | D．I realize |