[ Subject Verb Agreement ]
Several of these complications _____ linked to oral bacteria from gum disease that show up in the bloodstream.
A. is
B. are
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Past Simple (Questions)Present and Future TensesAdjectives & PrepositionDependent ClausesAdjective and AdverbAdverbs or AdjectivesFuture Continuous, Future Perfect and Future Perfect ContinuousPrepositions and ConjunctionsModal Verbs - ObligationPrepositions of Time and PlaceOther quiz:
Linking Words › ViewA marathon is a difficult race. _____, thousands of runners participate every year.
A. Whereas
B. Nevertheless
C. Although
D. Despite
Vocabulary › View
The _______________ is the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle.
A. Mantle
B. Stratus
C. Lithosphere
D. Core
Comparatives - Superlative › ViewThe girl is ____________ (tall) the man.
A. the tallest
B. taller than
C. more tall than
D. the most tall
Tenses › View
Surely, many volunteers ___________ the brigade this Sunday.
A. joined
B. join
C. will join