[ 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:
Homonyms › ViewHe ___ and dined his lady friend every night.
a. wind
b. wined
c. whined
Grammar › View
I’ve stopped ________ the newspaper because now I read the news online.
A. to buy
B. buying
C. bought
D. to buying
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