____ the popularity of the BPT39 wireless speaker, production will be increased fivefold starting next month
A. On behalf of
B. Whether
C. Moreover
D. As a result of

Random Topics:
Grammar TOEFLSynonyms and VocabularyGerund or InfinitivesGrammar: so and suchAdverbial Clause of ConcessionSimiles and Body IdiomsGrammar Present Perfect (ever never)Future Tense VocabularyPre-intermediateVerb-ing and InfinitiveOther quiz:
Modal Verb › ViewOh dear, we seem to have run out of salt. I ________ to the corner shop before dinner.
A. will have to go
B. needn’t go
C. could have gone
D. must have gone
Conditional Type 1 › View
If I … (be) not too tired, I … (go) to the cinema
A. don’t – will go
B. am – will go
C. am not – will go
Vocabulary and Grammar › ViewMukai Chiaki, the first female Japanese astronaut, ……….. 15 days aboard the space shuttle Columbia in space before it …….. to the Earth on July 23,1994.
A. spent – had returned
B. had spent – returned
C. was spending – was returning
D. spent – was returning
Phrasal Verb › View
Our teacher gets really _________ when we don’t do homework.
A. nervous
B. worse
C. better
D. angry