[ Modals Verbs ]
I’m sure she forgot the appointment.
A. She must have forgotten the appointment.
B. She could forget the appointment.
C. She could forget the appointment.
D. She must forget the appointment.

Random Topics:
Pronoun Antecedent AgreementModal Auxiliaries and To Be VerbsIdiom and TensesGerund or to InfinitiveGrammar AssessmentSubordinating Conjunctions and ClausesFuture Tense - will and going toPresent Progressive or Present SimpleSimple Present & Present ProgressiveTime ConjunctionsOther quiz:
Homonyms › ViewThe ship was moored at the end of the ___.
a. key
b. quay
Homonyms › View
Young deer like to ___ in the meadow on a bright summer day.
a. gamble
b. gambol
Let’s _______ that old box. We don’t need it.
A. throw up
B. throw in
C. throw off
D. throw away
Grammar › View
It was a hot day _________ we still had a fun time by the beach.
A. so
B. but
C. and
D. although
