Julie spent one month （ ） her term paper on Chinese poems.
（A）to write
（B）and wrote
（C）written
（D）writing
The story （ ） by the famous writer is （ ） at the factory now.
（A）wrote; printed
（B）written; being printed
（C）write; being printed
（D）written; printed
Like most of my classmates, I have some difficulties （ ） my second foreign language.
（A）studying
（B）to study
（C）to be studying
（D）being studying
