[ Grammar ]
“One of the biggest problems …. the unreasonable price.
A. has
B. is
C. are
D. have

Random Topics:
Phrase vs ClauseCommon & Proper NounsVerb Tenses and UsageVerb Patterns / IngNoun PhrasePresent Simple Affirmative and NegativeLinking VerbsModal Verbs of ObligationSimple Present TenseFuture Tense and ConditionalsOther quiz:
Grammar › Viewwhat is the comparative form of the word : friendly
A. more friendly
B. friendliest
C. friendlier
Prepositions of Time › View
Choose the right preposition of time for this sentence: She has been studying English ___ 2015.
A. during 2015
B. since 2015
C. for 2015
D. at 2015
Grammar › ViewHave you ever been to the USA? Yes, I___ to the USA.
A. has been
B. ‘ve been
C. was
Conditional › View
If I spoke English, I would ………… to complete my studies.
A. have been able
B. able to
C. be able to
