Choose the word or phrase that best completes the sentence.
Although thunder and lightening are produced at the same time, light waves travel faster _____, so we see the lightening before we hear the thunder.
A. than sound waves do
B. than sound waves are
C. do sound waves
D. sound waves

Random Topics:
Present & Past TensesSentences vs Run-OnsWish / If only ( Present)Countable & Uncountable NounsModals of Speculation and DeductionTenses UsageComparatives, Superlatives & EquativesPast PerfectQuantifiers, Countable and Uncountable NounsCountable and UncountableOther quiz:
Vocabulary › ViewSupple
A. -suggesting an incongruity between what might be expected and what actually happens
B. – bending easily; -readily adaptable; servile
C. -open to or marked by bribery or corruption
D. -to tear up by the roots; -to destroy totally
Vocabulary & Grammar › View
He is _____ – influenced by his father and grandfather. His behaviors and decisions are exactly the same.
A. mightily
B. strongly
C. terribly
D. weakly
Modal Verbs › ViewDon’t eat it. I’m 100% certain that it … be poisonous.
A. might
B. must
C. could
D. may
Homonyms › View
The red cross is a ___ of emergency health care.
a. cymbal
b. symbol
