[ Articles & Preposition ]
Our air conditioners cost around $1,000, ____ our competitors’ air conditioners cost at least $2,000.
A. since
B. for
C. while

Random Topics:
Adjectives and ArticlesModal Auxiliary VerbsPassive of Modal VerbsTenses: Present simple, Past Simple, Future SimplePresent Simple PassiveModal Verb Gerund or To InfinitiveSimple Present and Present Continuous TenseLanguage Features of an Opinion ArticleTAG QuestionsNoun Phrases and AdverbialsOther quiz:
Prepositions › ViewWe want to discuss —- this issue.
A. about
B. of
C. X
Grammar › View
My girlfriend and I ___ three times last week.
A. have gone out
B. gone out
C. went out
Past Tenses › ViewWhere _____ you _____ this car?
A. was … buy
B. did … bought
C. did … buy
D. have … buy
Tag Questions › View
It’s not going to rain, _________?
A. going it?
B. isn’t it?
C. is it?
D. won’t it?
E. has it
