Students sometimes support themselves by ______ of part time job.
The author of the report is well _____ with the problems in the hospital because he has been working there for many years.
With the change of the economic foundation the entire immense superstructure is _____ rapidly transformed.
Even if they are on sale, these refrigerators are equal in price to, if not more expensive than, _____ at the other store.
Her skirt had been so _____ in packing that she had to iron it before going out.
Some people either _____ avoid questions of right and wrong or remain neutral about them.