When the school building began to shake, the teachers randownstairs ____ all the students. The teachers are real heroes.A. after B. with C. before
Many people are grateful _______ ORBIS nurse _______ their help.
It’s generous _____ them to donate money to UNICEF.They think it’s important _____ them to help poor children go to school.
----Would you please not smoke here? Look at the sign. ---- ________.
I think playing football is _______than _________ TV.A healthier , watching B. healthier ,watch C .more healthy, watching D. more healthy , watch.
There are over twenty ________ visitors visiting the park.