1. to look after smb/smth = c. to be responsible for or take care of smb or smth
2. to look down on smb = a. to think that you are better than somebody
3. to look forward to = e. to be thinking with pleasure about something that is going to happen
4. to look something up = b. to look for information in a dictionary or a reference book
5. to look through smth = d. to examine or read something quickly
6. to look up to smb = f. to admire / respect someone
7. to look for smth = g. to hope for something; to expect something