[ Grammar ]
Choose the correct verb from the choices
The flock (flies, fly) south for the winter.
A. fly
B. flies
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Auxiliary and Modal VerbsGrammar Comma UsagePresent ContinuousKinds of NounsTenses and ArticlesPresent Tenses: Simple vs ContinuousTOEFLPresent Simple Tense PassiveAdverbs and PhrasesCommon Grammar Mistakes and Spelling TipsOther quiz:
Grammar › ViewThey always _________ ( study) English at the weekend.
A. Studied
B. Study
C. are studying
Grammar › View
Global warming affects humans, the environment, and is scary
A. parallel
B. not parallel