Li Na returned to Wuhan after the Games, ______, as is known to us, she had been brought up and trained to be a gold medalist of tennis.
| A．when | B．that | C．which | D．where |
You can never be ________ when crossing the street.
| A．very careful | B．too careful | C．carefully enough | D．enough careful |
________, 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 |
Before Sally left home, her mother kept telling her to ________ her manners at the party.
| A．notice | B．care | C．mind | D．observe |
She has ________ that I find it hard to believe anything bad of her.
| A．so a lovely face | B．so lovely a face | C．such lovely a face | D．such lovely face |
Either you or one of your students ________ to attend the meeting ________ tomorrow.
| A．are; to be held | B．is; being held | C．is; to be held | D．are; having held |