From his _______expression, we can guess that the problem maybe was quite _______.
Jennifer didn’t attend the important conference,and tha’s _________she hadn’t been gotinformed of it.
The twins are so much__________that it is difficult to tell one from the other.
.Learning foreign languages calls for your memory,time,patience and emotions._______,it is not a simple thing.
—How was your examination? —It wasn’t very difficult,but it was__________long.
Anyone who has a _________of humor can get along well in__________society.