Professor Von teaches ______ art in ______ university in America.
| A．不填; an | B．不填; a | C．the; a | D．an; an |
The crowd is too noisy, but anyway I have to make myself ______ to them because the news is so important to them.
| A．known | B．understood | C．heard | D．known |
____she is not so healthy _____she used to be ?
| A．How it is that; as | B．Why is it that; what |
| C．Is it why; that | D．How is it that; as |
It was not until she had finished all her work_______home tired
| A．did she return | B．that she returned |
| C．when she returned | D．that did she return |
_____ his father came back from work_____ his homework.
| A．Not until; he did | B．It wasn't until; when he did |
| C．It was until; that he didn't do | D．It wasn't until; that he did |
Only when _____ in 1945 _____ to his hometown.
| A．was the war over; he returned | B．the war was over; had he returned |
| C．the war was over; he returned | D．was the war over; had he returned |