Museums of natural history are ordinarily – – – – – by special interest groups created for that purpose.
(A) owned and operated
(B) they own and operate
(C) owning and operating
(D) the owner operates

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Future TensesAdverb of MannerPast Progressive TenseGrammar: Have toGrammar Past and Future TenseMust Vs Have toGrammar - help/have/let/makeReported Speech and SubjunctiveIndependent and Dependent ClausesVerb Forms and PrepositionsOther quiz:
Tenses › View“How long have you learned English?”
“I … English for six years by the end of the next year.”
A. will learn
B. learn
C. have learned
D. will have been learning
Future Tenses › View
In the sentence ‘She will be singing at the concert next week.’, what future tense is used?
A. Future Continuous Tense
B. Present Continuous Tense
C. Future Perfect Tense
D. Past Continuous Tense
Prepositions › ViewFour-fifths of the world’s computers use programs ________ English.
A. at
B. in
C. on
D. about
Grammar › View
A: The weather is beautiful. Would you like to ….
B: I’d love to.
A. study hard
B. go for a walk
C. stay in
D. play computer games