[ Tenses ]
This exercise is ___ than the last one.
A. challenging
B. challenginger
C. more challenging
D. most challenging

Random Topics:
Social Media VocabularyAdjectives-Comparison, SuperlativeModal VerbFOR & SINCEPresent Simple VS ContinuousPast and Past ContinuousToeic VerbGrammar PhrasesSimple Present and Present ContinuosWill and Going toOther quiz:
Grammar & Vocabulary › ViewUnable to find anyone to help us, Don and I had to wash the toilet _____________.
A. myself
B. himself
C. ourselves
D. themselves
Tenses › View
By the time the show began, all friends _____.
A. had arrived
B. has arrived
C. arrived
D. arrives
Gerund and Infinitive › ViewMy friend Mary is a blabbermouth! She can’t resist _______ everyone what she heard from me.
A. tell
B. to tell
C. telling
D. to telling
Comparison & Modal Verbs in Passive Voice › View
Your phone ________ off before you enter the exam room.
A. must be to turned
B. must turned
C. must turn
D. must be turned
