[ Prepositions ]
A. They are walking down the stairs
B. They are working down the stairs
C. They walked up the stairs
D. They are walking downs the stairs

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Past Continuous Tense & Past ModalsCOUNT - NONCOUNT NOUNSModal Verb in Passive VoiceGrammar - to beModals of Necessity and SuggestionNouns - Word Form-IONWH Questions and Simple Past TensePassive Voice Active VoicePresent Simple & Present Progressive TenseConjunctions - ConnectorsOther quiz:
Reported Speech › ViewMatch the direct speech to the verb tense changes in reported speech choosing the correct option.
“Imperative ”
A. Present simple
B. Infinitive
C. The same tense
Grammar › View
She __________ her keys and cannot find them now.
A. loses
B. lost
C. has lost
D. had lost
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a. an occupant
b. a tenant
c. a landlord
Preposition › View
Damage …….. the cornea is a frequent cause ……… blindness.
A. In/for
B. from/with
C. to/of
D. with/in