Cloning humans has been _____ in the science world for many years and it is likely to continue .
| A．ridiculous | B．contemporary |
| C．controversial | D．contradictory |
The fire spread through the hotel very quickly, but everyone _____ get out.
| A．had to | B．would | C．was able to | D．could |
She must be looking forward to as much to his return as he himself is to _______ her.
| A．see | B．have seen | C．seeing | D．be seeing |
Reportedly on April 15, 2013 three people including a Chinese girl were killed in the Boston Marathon attacks when two bombs were _______, which shocked the whole world.
| A．set about | B．set off | C．set up | D．set out |
After marriage, the world-famous man, who was a leading role in physics, decided to give up his wife ________ his career（事业）.
| A．more than | B．rather than | C．instead | D．in place of |
－Are you satisfied with her answer?
－Not at all. It couldn’t have been ________.
| A．any worse | B．so bad | C．much better | D．the worst |