________, you need to give all you have and try your best．
| A．Being a winner | B．To be a winner |
| C．Be a winner | D．Having been a winner |
Not having promoted the new digital camera successfully, the company should its original marketing methods.
| A．account for | B．reflect on | C．work out | D．call up |
It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any __________.
| A．symptom | B．sense | C．sample | D．shadow |
It was really ________ of your brother not to play the guitar while you were preparing your lessons.
| A．typical | B．generous | C．considerate | D．determined |
Modern science has given clear evidence ______ smoking can lead to many diseases.
| A．what | B．which | C．that | D．where |
The new couple couldn’t afford a new house. _______, they bought a second-hand one.
| A．Besides | B．Otherwise | C．Instead | D．Still |