____ the watch and see if you can find out what’s wrong with it.
A. Pack up Break down C. Dig out D. Take apart
The keeper of the spring cleared away the leaves and branches, and wiped away the silt(淤 泥) that would _______ have choked and polluted the fresh flow of water.
| A．thus | B．otherwise |
| C．therefore | D．later |
Most students are for the new school rule, which says all the studentsnot take their cell phones into the classroom.
| A．will | B．can |
| C．shall | D．must |
He was admitted to our school two years ago, a top school in our hometown, _____ he has been crazy about reading electronic novels, killing time.
| A．after that | B．since that |
| C．after when | D．since when |
The young couple,who returned my wallet,left _____ I could ask for their names.
| A．before | B．while |
| C．after | D．since |
It was really a great to all the teachers and parents that no students were injured in the accident.
| A．help | B．relaxation |
| C．relief | D．favor |