[ 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:
Similes and Body Idioms › ViewA little birdie told me that the test would be next week!
A. Someone told me a secret
B. a small bird
Grammar - to be › View
The bus …….late. Many people are waiting for it to arrive.
A. was
B. were
C. is
D. are
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
