[ Modal Verbs ]
Despite his efforts, Tom ___ solve the complex problem. He approached it in a wrong way.
A. can’t
B. could
C. couldn’t
Select your answer:

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Relative & ModalsPassive Voice - Present Simple and Past SimplePhrasal Verb Put & GoEnglish MorphosyntaxWh-Questionlike/do not likePhrase and ClauseAll, Both, Neither, None, EitherAdverb or AdjectiveConjunctionOther quiz:
Grammar › ViewHui Shan and Si Yuan __________ not attend the sports practice.
A. do
B. does
C. did
D. doing
Grammar › View
They _______ making a delicious cake.
A. are
B. is
