[ Grammar ]
Today, USB is the most ___ port on a computer.
A. usable
B. useful

Random Topics:
Passive Voice, Modals of Deduction and First ConditionalRelative PronounsContinuous and Perfect TensesModal Auxiliaries and Similar ExpressionsAdjectives with PrepositionTenses - AuxiliariesPhrasal VerbQuantifierProgressive Verb TensesSimple Present - WH QuestionsOther quiz:
Modals › ViewI think you ……… go out more and meet new people.
A. can
B. may
C. should
D. must
Tenses of Verbs › View
Choose the simple form of the underline verb.
I ________ the movie at the theater last night.
A. watched
B. was watching
C. had watched
Prepositions › ViewMy apartment building is ___ the corner.
a. in
b. on
c. at
Tenses › View
They__japan two years ago.
A. Leave
B. Left
C. Is leaving
D. Have left
