[ Grammar ]
In the vessels of the vascular system of the giraffe _____ of valves that ensures a needed supply of blood to the head.
A. are series
B. is seroius
C. is a series
D. a series is
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Grammar - Sentence StructureLinking WordsDescriptionsComparative AdjectivesModals, Infinitives and GerundsGrammar - Future ActionWord Form & Verb TenseAuxiliary and Modal Verbslike/do not likeGerunds and TensesOther quiz:
Present Tenses and Connectors › ViewShe ________ in the same house for 10 years.
A. has lived
B. have lived
C. lives
D. is living
Grammar › View
My mother is taking the bus to work now. He told me that his mother ________ the bus to work then.
A. is taking
B. was taking
C. will take
Grammar and Vocabulary › ViewThis means to put a story in a certain time and place.
A. prequel
B. clip
C. shoot
D. set
Future Tense (will/be going to/p.continuous) › View
What are you doing __________? B: I haven’t decided yet. What are you up to?
A. at the moment
B. now
C. right now
D. this weekend