The audience stood and （ ） at the end of the performance.

_____at the door before you enter the room, please.

The manager urged his staff not to （ ） the precious opportunity.

These tickets for the performance are （ ） until the end of the month．

Only when you have obtained sufficient data （ ） come to sound conclusion.

Greatly agitated, I rushed to the apartment and tried the door, （ ） to find it locked.

Don’t let the child play with scissors （ ） he cuts himself.

If you are interested in this position, you can _____ to our personnel department for an interview.

The new house I moved in last month is very （ ） for me as I can get to my company by a direct bus within twenty minutes.

I don’t like to _____ a room with a stranger.

If you suspect that illness might be serious，you should not （ ） going to the doctor.

Our students are free to study （ ） interests them.