Many difficulties have ______ as a result of the changeover to a new type of fuel.
| A．risen | B．arisen | C．raised | D．arose |
We left Xi' an _.___ a very hot summer afternoon.
| A．on | B．in | C．during | D．by |
The teacher is busy ____ teaching.
| A．with | B．for | C．on | D．of |
____ the sun, nothing would grow.
| A．For | B．With | C．Under | D．Without |
Our bus drove ____ the Great Hall of the People.
| A．across | B．through | C．past | D．over |
I was wandering ____ the streets when I caught sight of a tailor's shop.
| A．across | B．through | C．by | D．past |