[ Sit vs. Set ]
To avoid back pain you should ___ straight.
a. set
b. sit
c. seat

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Unreal ConditionalsPerfect and Past TenseAdjective Clause and Adverb ClauseSuperlative & Comparative AdverbsSynonym and AntonymArticles A and AnRelative Pronouns and AdverbsAdverb of MannersComplex PrepositionsPresent Perfect and Present Perfect ContinuousOther quiz:
Vocabulary › ViewWhat does ‘befell’ mean?
A. showing a lack of experience or judgment
B. angry
C. metal made mostly of tin
D. to happen to
Grammar › View
Choose the suitable word:
You won’t tell anyone about this, do you/will you?
A. do you
B. will you
Grammar › ViewChildren _________ respect their parents.
A. should
B. shouldn’t
C. must
D. mustn’t
Grammar › View
The book is missing ____________________ cover.
A. it’s
B. its
