[ Grammar ]
While many spiders use webs to catch their food, others capture prey using hunting or burrowing techniques. Spiders from the family Ctenizidae, often called trapdoor spiders, ______ their burrows with doors, using their silk for hinges.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. cover
B. are covering
C. will have covered
D. had covered
Select your answer:

Random Topics:
Compound Words and SentencesGrammar - used toGerund vs InfinitiveSentence Structure and Verb TensesPast TenseSimple Compound and Complex SentencesModal AuxiliaryActive and Passive voiceDegree of ComparisonThe -ing Form of VerbsOther quiz:
Grammar › ViewWe _______vegetables from greengrocer now but we _________ grow vegetables when we lived in the country twenty years ago.
A. drink-used to
B. buy-didn’t use to
C. buy-used to
D. play-used to
Grammar › View
The negative past form of: she drank coffee.
A. She did not drink coffee
B. She does drank coffee
C. She do not drank coffee.
