Topics: Present Simple Tense
The birds (sing) __________ in the morning.
A. sings
B. sing
C. singing
D. are singing
Select your answer:
Random Topics:
TOEFL GrammarGrammar ( going to)Modals of ObligationFamily Members and Present SimpleShould, Should not haveModal Verbs - ObligationVocabulary and Sentence StructureMixed ConditionalConditionals and WishesVerbs and TensesOther quiz:
Phrasal Verb › ViewDentists ……that cleaning teeth after meals and avoiding eating sweets and sugary foods prevent tooth decay.
A. Give away
B. Get over
C. Point out
D. Give in
Tenses › View
Life ____ greatly since Thomas Edison ____ the first light bulb in 1879.
A. is changing / was inventing
B. has been changing / has invented
C. has changed / invented
D. changed / has been inventing