[ Grammar ]
Every night the watchman turns on all the lights and …around the building every half an hour.
A. walks
B. is walking
C. walked
D. to be walking

Random Topics:
VOCAB & GRAMMARPast Perfect or Past Perfect ContinuousThe Past SimpleGrammar: is/are/was/wereConditional SentenceVerb PhraseGive, do and makeAuxiliary WordsPhrasal Verb & Prepositional PhraseCompliment, Congratulation, and HopeOther quiz:
Types of Simple Sentences › ViewStop, take your hands off of me!
A. declarative
B. imperative
C. interrogative
D. exclamatory
Present Perfect Tense › View
He ______________ to Hawaii many times.
A. have been
B. went
C. has been
D. was going
Adverbs and Adverbial Phrases › ViewI love unusual foods, I’ve _____ tried fried insects!
A. even
B. ever
Tenses › View
. She _____with her parents in London.
A. lived
B. lives
C. living
