[ Grammar ]
Something _________ happened or they would be here by now.
A. must
B. must be
C. must have
D. must have been

Random Topics:
Past Continues TenseSentences vs Run-OnsTransitive and Intransitive VerbPresent Perfect Simple & Present Perfect ContinuousPoetry VocabularyPreposition on TimePhrase or ClauseNumbersMixed Present TensesPresent and Past TenseOther quiz:
Conditional Sentences › ViewJames won’t lose the game if he ………………… (pay) more attention.
A. pays
B. pay
C. paid
Mixed General Quiz › View
What is the US dollar to British pound exchange ___.
a. late
b. rate
Identify the structure of the sentence below.
“Although Sarah was barren, she still bore Abraham a son.”
A. Simple
B. Compound
C. Complex
D. Compound Complex
Tenses › View
My dog ___ to play at the park
A. is like
B. likes
C. like
