In the past few years, sea ice ____ in the Arctic as a result of global warming.
| A．had melted | B．has been melting | C．melted | D．is melting |
Do you think the concert last weekend was of __________?
| A．much success |
| B．successful |
| C．very success |
| D．very successful |
The girl asked, "Could you help me solve the math problem?" "Of course, I can." he replied __________.
| A．without hesitation |
| B．without consideration |
| C．without discussion |
| D．without doubt |
It was __________ computer games that cost the boy a lot of time __________ he ought to have spent onhis lessons.
| A．played; that |
| B．playing; when |
| C．to have played; which |
| D．playing; / |
Only in this way __________ to make improvements.
| A．you can hope |
| B．can you hope |
| C．you did hope |
| D．did you hope |
In order to find __________ better job, he decided to study __________ second foreign language.
| A．the; a |
| B．a; a |
| C．the; the |
| D．a; the |