His singing career began to ______ in the late 1990s.
| A．get off | B．take off |
| C．put off | D．set off |
The problem will appear____ a different welfare system will be created.
| A．unless | B．whether | C．until | D．if |
____ is those small daily happenings ____make life so special.
| A．It / that | B． That / that | C．It / this | D．This /this |
______ the agreement was reached without conflict.
| A．Happy | B．Happily | C．Unhappy | D．Unhappily |
Jack liked the milk so much that he had it ____to his house every week.
| A．deliver | B．to deliver | C．delivered | D．delivering |
The young man，who by then ___ admission to university，decided to do some part-time jobs to gain more practical experience．
| A．gained | B．was gaining | C．has gained | D．had gained |