e class time, our teacher has ______students do half of the exercises in class and complete the other halffor our homework

She devoted herself________to her research and it earned her a good reputation in her field[ ]

Students shouldn’t go to school __________breakfast. It’s bad for their health.

The research results show that the earth goes a little faster ______it is closer to the sun

Mr Bush is on time foreverything How____ it be that he was late for the opening ceremony