[ TOEFL Grammar ]
The quality of the essays _____ significantly among applicants.
A. vary
B. varying
C. varies
D. is varying

Random Topics:
Past Tense, Recount Text, and Future TenseSuffixes and TensesModal Auxiliary VerbsBe going to / WillTenses and Sentence CompletionPresent Simple: affirmative, negative, interrogativeHave GotConjunctions, Interjections and DeterminersModals in the PastPersonal PronounOther quiz:
Countable Quantifiers › ViewI like to have ______ orange and ______apple.
A. some and an
B. an and an
C. a and a
Present Tenses › View
This music group … more and more popular. It’s interesting to visit their show.
A. is becoming
B. becomes
C. has become
Grammar › ViewThose ___ look ripe for eating.
A. mangoes
B. mango
Grammar › View
It’s raining. …………….., Mr. Nam has to go to work.
A. Although
B. So
C. Therefore
D. However
