[ Adverb Clause ]
We cannot conduct the experiment __________ we receive the necessary equipment.
A. until
B. before
C. if
D. though

Random Topics:
Quantifiers / Prepositions of Time and Comparative AdjectivesConjunctions in Complex SentencesAdjectives or AdverbsObject PronounsModals Deduction: cant /mustTag QuestionRelative & ModalsPrepositions and Preposition PhrasesTenses: Present simple, Past Simple, Future SimplePresent Simple and Present Continuous TensesOther quiz:
Grammar › ViewHer doctor recommended that she _______ more exercise.
A. takes
B. take
C. took
D. taking
Conditional Sentence Type 2 and Type 3 › View
If she had taken care of her son, he __________ a criminal.
A. does not become
B. did not become
C. would not become
D. would not have become
Relative Pronouns and Adverbs › ViewIs this correct????
The box, that was sent to me, is sitting outside the mailbox.
A. YES
B. NO
Comparison › View
In my opinion, safety is __________ important factor to rank a city.
A. the second
B. the second most
C. second the most
D. most the second