[ Modals, Conditionals, and Clauses- Defining, Non-defining ]
Anna reminds herself, “I mustn’t forget to call my grandmother.” Which option best describes the correctness of this sentence?
A. mustn’t forget
B. mustn’t to forget
C. mustn’t forgetting
D. mustn’t have forgotten

Random Topics:
Sentence StructureComparison DegreePreposition FormPrepositions and Prepositional PhrasesModal Verbs & Perfect InfinitiveModals and Modal PerfectsSo / Neither / Either / TooDirect Object and Indirect ObjectGrammar: so and suchModal, Causative Verb & Elliptical StructureOther quiz:
Grammar › ViewIf I have more than one box, then I have several _____________!
A. boxs
B. boxes
C. boxies
D. boys
Simple Past/Past Progressive › View
During that time, I __________ in Japan.
A. taught
B. was teaching
C. were teaching
D. teached
Noun / Pronoun › View. Identify the indefinite pronoun in the following sentence: “Someone left their umbrella in the hallway.”
A. their
B. left
C. someone
D. umbrella
Noun Phrases › View
What period of time does this refer to?
before the war
A. general past time
B. specific past time
C. present
