The dog ____ the door because it wanted to go in.

A.scratched                 B. watched                  C. rubbed                           D. grasped

His salary went into five ____ a month.

A.figures                     B. numerals                 C. numbers                 D. fatigue

She ____ that she knows nothing about the plot.

A.professes B. professions C. professors D. professional

The author of the guidebook is an architect ____.

A.of profess B. by professional C. of professor 　D. by profession

I would ____ against undue optimism.

A.caution B. cautious C. cautions D. caution to the winds

We didn't plan our art exhibition like that but it ____ very well.

A.worked out                     B. tried out                  C. went on                  D. carried on

For about six months, he and his fellow staff have ____ at the new design.

A.devoted                   B. engaged                  C. took                              D. worked

We decided to delay ____ on our holiday until next month.

A.go                           B. to go                             C. going                             D. gone

It's wrong ____ you to laugh ____ her face.

A.for; in B. for; at 　C. of; in D. of; at

His performance made the audience ____.

A.fell about laughing 　 B. fall about laughing C. fell into laughing D. fall into laughing