[ 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:
Clause Markers TOEFL Grammar › ViewComplete the sentence with the best clause marker:
The Mossi people of West Africa use talking drums as a means of preserving their history, _________ has been handed down generation to generation.
A. when
B. which
C. so that
D. how
Grammar › View
When I was in troubled ,no one ___ to help me.
A. Come
B. Came
C. Was
D. Have
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
