One of the most difficult problems ______ whenever we try to achieve goals.
A. arise
B. arises
C. is arisen
D. are arisen

Random Topics:
Adjective OrderTenses - Pasive VoicePossessive AdjectivesSo....that... Such.......thatModal Verbs - ObligationMay, MightApostrophes and Quotation MarksPast TensesVocabularyGerunds + To InfinitiveOther quiz:
Grammar › ViewIdentify the correct sentence.
A. “Martin, Have you met my half-brother, Michael?”.
B. “Martin, have you met my half brother, Michael?”
C. “Martin, have you met my half-brother, Michael?”.
D. “Martin, have you met my half-brother, Michael?”
Adverbial Concession Clauses › View
Although Sue felt tired, she stayed up late talking to Jill.
A. Despite feeling tired, Sue stayed up late talking to Jill.
B. In spite feeling tired, Sue stayed up late talking to Jill.
C. Sue wouldn’t feel tired despite staying up late talking to Jill.
D. Sue stayed up late talking to Jill. As a result, she was tired.
Grammar › ViewWhich verbs are future perfect tense
A. had
B. has, have
C. will have
Gerunds › View
Identify the gerund
Many of the laughing students love singing.
A. Many
B. laughing
C. love
D. singing
