[ Speculation with Modal Verbs ]
What’s that noise? I’m not sure, it …. be the dog.
A. must
B. could
C. can’t

Random Topics:
Definite and Indefinite ArticlesMixed GrammarDegrees of ComparisonPresent Perfect: for/sinceNoun PhrasesPassive Voice with Modal VerbsRelative Pronouns with PrepositionsVerbal CommunicationTenses and StructuresSimple Present VS Present ContinuousOther quiz:
Lay vs. Lie › ViewKnives, dessert spoons, and forks have been … on the dinner table.
(a) lain
(b) laid
Conjunctions › View
Analyze the conjunction in this complex sentence: ‘Although it was raining, we decided to go hiking.’ What type is it?
A. coordinating conjunction
B. conjunctive adverb
C. subordinating conjunction
D. correlative conjunction
Adjective › ViewWe were ______ by his talk.
a. stimulating
B. stimulated
Grammar › View
Identify what the underlined word is in the sentence.
Grace cleaned up the broken glass
A. Gerund
B. Infinitive
C. Participle
