[ Modal Verbs ]
They built this huge temple 1000 years ago. This ______ a great civilization.
A. should have been
B. must have been
C. could have been
D. can’t have been
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Passive Voice in Past and Present TenseGrammar, adverbs of frequency placementAdverbLinking WordsPresent Perfect - Just, Already, YetSynonym and AntonymAdverb of ConcessionGrammar (want to/ need to/ have to)Simple vs Continuous Past TenseTenses and StructuresOther quiz:
Grammar › ViewThey have ____________ in China for 6 years.
A. lives
B. living
C. lived
D. live
Vocabulary › View
To grow in degree, amount, or size means to ________
A. increase
B. decrease
C. decline
Tenses › View. By next month, they __________ each other for a decade.
A. have known
B. had known
C. will have known
Prepositions › View
The tree fell _______ during the storm last night
A. off
B. out of
C. down
D. into