My parents don’t mind what job I do ________I am happy.
| A．even though | B．as long as | C．as soon as | D．as though |
Do ____ you think is right, ____ difficulties you may have.
| A．what; however | B．that; whatever |
| C．whatever; whoever | D．what; whatever |
---Why can't I smoke here?
---At no time__________ in the meeting-room
| A．is smoking permitted | B．smoking is permitted |
| C．smoking is it permitted | D．does smoking permit |
______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
| A．When | B．As | C．While | D．Before |
He devoted most of his time to his research, believing his hard work would___sooner or later.
| A．put off | B．take off | C．come off | D．pay off |
China, a country with 145 million elderly people, will remain _______ ageing society during this century, according to _______ Chinese population experts.
| A．/; the | B．an; / | C．an; the | D．the; / |