Mark the letter A, B, C, or D to complete each of the given sentences.

1. My grandparents looked ______ my brother when he was small.

A. with              B. at                C. into             D. after

2. A group of students carried ______ research on Korean culture and cuisine.

A. for               B. out              C. off                D. by

3. We need to work ______ the high unemployment in our town.

A. out             B. about           C. for               D. up

4. My friends were looking ______ information about Steve Jobs on the Internet.

A. on              B. from            C. for                D. by