Ann was angry at __________ at her.

A. Lost his way and not knowing B. Lost his way and didn't know

C. Losing his way and didn't know D. Having lost his way and not knowing

A. invited B. inviting C. being invited D. having invited

A. the professor began the lecture B. the lecture began in no time

C. we were attracted by the lecturer immediately D. the bell announced the beginning of the lecture

one needs being patient person

patience is to need

one needs to be patient

patience is what needed

A. he found a lot of people B. a lot of people were

C. he found a lot of people’s D. people were found

A. was destroyedB. destroying

C. being destroyedD. destroyed

A. leading B. led C. lead D. to be led

A. bought B. to buy C. buying D. buy

each having its special properties B. having its special properties

one has its special properties D. each has its special properties

A. considered B. be considered C. considering D. having considered