18-year-old girl called Anna from England visited Great Wall last Friday .

Have you heard of _________ about Jeremy Lin (林书豪)?—Yes. He did quite well in the last NBA basketball match.

The children are interested ___ this subject. [ ]

Our math teacher ______ in our school for 20 years and he _____ here when he was 23 years old.

Come closer. If you look_____, you’ll find there is something wrong with the machine.