. We called the First-Aid Center ____ the traffic accident happened.
The teacher together with the students ________ discussing Reading Skills that ________ newly published in America.
If you have a job,________yourself to it and finally you’ll succeed.
Mary is the only one of the teachers who ________ a little Chinese because she is one of my friends who ________ been to China.
.________ surprising it is you should not know what has happened!
Not until I came home last night ________ to bed.