79. Such a grammar mistake is ______ among the beginners of English study.
| A．normal | B．common | C．general | D．Ordinary |
Not until I began to work ________ how much time I had wasted.
| A．didn’t I realize | B．did I realize | C．I didn’t realize | D．I realize |
Not a single song ________ at yesterday’s party.
| A．she sang | B．sang she | C．did she sing | D．she did sing |
I finally got the job I dreamed about. Never in all my life ________ so happy!
| A．did I feel | B．I felt | C．I had felt | D．had I felt |
.Mary couldn’t make herself _______ attention to because her classmates made so much noise.
| A．paid | B．to pay | C．pay | D．paying |
.—Doyoulikethematerial?
—Yes,it______verysoft.(MET1994)
| A．isfeeling | B．felt | C．feels | D．isfelt |