He said it was this classroom _______ he found his lost watch and _____ he would take good of it from then on. 
| A．that; that | B．when; what | C．that; what | D．where; that |
－Miss Jones once _________ music at a local college for ten years and now is an actress.
－No wonder I often hear her sing some pop songs.
| A．had taught | B．has been teaching | C．taught | D．is teaching |
________ that he found it difficult to stop at the busy crossing.
| A．So fast he was driving | B．So fast was he driving |
| C．So fast drove he | D．So fast he drove |
High school students continue to work hard, _______ they often complain about great burdens and pressures in their life.
| A．as if | B．as long as | C．unless | D．even though |
Without the timely aid from different provinces, the affected people in those areas ________ the difficulty.
| A．wouldn’t overcome | B．mustn’t have overcome |
| C．hadn’t overcome | D．wouldn’t have overcome |
Process has been very smooth. ______, we are not confident that it will be completed on time.
| A．Therefore | B．Besides | C．Though | D．However |