[ Grammar ]
Every night the watchman turns on all the lights and …around the building every half an hour.
A. to be walking
B. walks
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Gerund, Infinitive & ModalsPrepositions after VerbsAsking & Giving AttentionAdverbial ClausesQuantifiers & Modals of ObligationTensesPassive with ModalsSimple Past Tense and Present Continuous TenseModals, Phrasal Verbs, Gerunds and InfinitivesComparative AdjectivesOther quiz:
Adjective and Adverb › ViewEating _______fruits and vegetables helps you stay in good shape.
A. Healthy
B. Healthily
Grammar › View
Which adjective doesn’t end with -er when we change it into its comparative form?
A. big
B. tall
C. good
D. modern