[ Gerunds and Infinitives ]
It seems difficult __________________ everything about this topic.
A. to knowing
B. know
C. knowing
D. to know
Select your answer:
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Modals and Daily VocabularySpeech TensesGrammar and VocabularyTenses and Figurative LanguageMorphology and Grammar-Ing and Infinitive Verb PatternsPronounsPresent Perfect TenseLanguage Features of an Opinion ArticleFuture TenseOther quiz:
Progressive Tense › ViewYou __ studying all morning, you should take a break now.
A. are
B. were
C. was
D. am
Grammar › View
Identify the simple subject in the sentence below.
Crabs often live in rock pools along the shore.
A. Crabs
B. rock
C. pools
D. shore