__________ the teacher explains the concept, the students won't understand ...

[ Adverb Clause ]

__________ the teacher explains the concept, the students won’t understand it.

A. Until

B. Unless

C. Although

D. Before

Select your answer:

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Grammar, Conditional Sentences, Vocabulary › View

Unless the Prime Minister ______ him personally, he would not attend the function.

A. invites

B. invited

C. inviting

D. invite

Grammar › View

Which of these words are nouns?

I had a piece of fruit today.

A. had

B. piece