[ Grammar & Vocabulary ]
It is difficult ____ rules that tell exactly when you should apologize.
A. writing
B. to write
C. write
D. wrote

Random Topics:
Irregular verbsIntermediate PrepositionsAdverbs, Modals, Preposition of timeVocabulary and TensesPresent Perfect: for/sincePossessive Adjectives & Possessive PronounsPhrasal Verb & Prepositional PhraseFuture or PastArticles and PronounsComparative AdverbOther quiz:
Tenses › ViewI _______ at this time tomorrow.
A. will work
B. will be working
C. was working
D. am working
Grammar › View
I prefer reading __________ watching television.
A. to
B. and
C. over
D. than
Preposition of Time › Viewwill graduate from secondary school _______ 2015.
A. at
B. in
C. on
D. from
Demonstrative Pronouns and Verb Tenses › View
The children ____ in the park.
A. are play
B. are playing
C. play
D. is playing
