I have aleady waited here for ___ hour and ___ half.
| A．an….a | B．a….a | C．a…..an | D．an….an |
I don’t know how it ___________ that our car was bumped from behind.
| A．let out | B．gave out | C．got about | D．came about |
Nowadays, an increasing number of people have ___________ to the information they need through the Internet.
| A．appeal | B．access | C．assess | D．application |
The development of industry has been ________ gradual process throughout ______ human existence from stone tools to modern technology.
| A．不填；the | B．the; a | C．a; 不填 | D．a; a |
----I’m afraid I’ve broken your cup.
----______________, it was old and I was going to throw it away.
| A．Never mind | B．Don’t mention it | C．Forget that | D．How come |
Between the two parts of the concert is an interval, ______ the audience can buy ice-cream.
| A．when | B．where | C．that | D．which |