________ he still paused uncertain, he became aware that the driver was looking closely in from the street at this unusual scene.
| A．While | B．As | C．Since | D．Because |
The boy had a _____ escape when he ran across the road in front of the bus.
| A．close | B．short | C．narrow | D．fine |
A university is an educational institution which _____ degrees and carries out research.
| A．rewards | B．awards | C．grants | D．presents |
We are interested in the weather because it _____ us so directly ------ what we wear, what we do, and even how we feel.
| A．benefits | B．guides | C．affects | D．effects |
An early typewriter produced letters quickly and neatly; the typist, _____ couldn't see his work on his machine.
| A．however | B．therefore | C．yet | D．although |
The reason why he adapted to the new situations quickly is that he has a _____ attitude.
| A．changeable | B．alternate | C．movable | D．flexible |