[ Prepositions ]
Please turn out the lights _____ you go to bed.
A. after
B. as soon as
C. while
D. before

Random Topics:
take, make, doGerunds & Infinitives + VocabularyFuture SimplePast or Present Verb TenseGerund, Infinitive & ModalsAdjectives & PrepositionCountable & Uncountable NounsPast Tense vs Present Perfect TenseThere is, There are, Some, AnyTenses and StructureOther quiz:
Grammar and Vocabulary › ViewLuke is the most helpful boy in class as he _______ helps his friends.
A. never
B. seldom
C. rarely
D. always
Simple Tenses › View
We _____ vacatons at the beach last month.
A. will spend
B. spent
C. do spend
D. spends
Grammar › ViewYesterday, i ________ my father to the supermarket.
A. follow
B. follows
C. following
D. followed
Past Tenses › View
He (never try) sushi before he (visit) Japan.
A. He had never tried – he visited
B. He never tried – he visited
C. He had never tried – he was visiting
D. He had never tryed – he visited
