[ Adverb Clause ]
__________ the teacher explains the concept, the students won’t understand it.
A. Until
B. Unless
C. Although
D. Before

Random Topics:
Past TensesVerb TenseComparative and Superlative AdjectivesMust / must notNouns and QuantifiersGrammar: wishes and regretsAsking for and Giving OpinionPresent, Past, Present Perfect and ComparativeAdjective + to + VerbModal AuxiliariesOther quiz:
Relative Clause › ViewHengky Kurniawan, who is serving as an acting mayor of West Bandung Regency, is a friend of mine.
A. restrictive
B. nonrestrictive
Grammar › View
We _________________ pay attention in class.
A. must
B. make
C. let
D. mustn´t
Reported Speech › ViewHarold said, “Don’t bring sodas near the computers!”
A. Harold told us not to bring sodas near the computers.
B. Harold asked us if we were bringing sodas near the computers.
C. Harold told to us that we had bringed sodas near the computers
D. Harold said to bring sodas near the computers.
Grammar › View
He _____ want to go to the party tonight.
A. Do
B. Does
C. Don’t
D. Doesn’t
