[ Modal Verb ]
To politely ask for permission to do something.
A. May/might
B. Can/Could
C. Must
D. Should

Random Topics:
Comparative and Superlative AdverbsAdjective ClauseSecond ConditionalGerundGrammar, Conditional Sentences, VocabularyGrammar: Imperative and Exclamatory SentencesRelative PronounObject PronounVerb + InfinitiveMust Vs Have toOther quiz:
Grammar and Vocabulary › ViewShe was cleaning her teeth when the phone ________.
A. was going to ring
B. was ringing
C. rang
D. ring
Tenses › View
They / Hanoi / their summer vacation / last month.
A. They are in Hanoi on their summer vacation last month.
B. They were in Hanoi on their summer vacation last month.
C. They in Hanoi on their summer vacation last month
D. They was in Hanoi for their summer vacation last month
Present and Past Tense › Viewtwo days ago, I ……… a hamburger for lunch.
A. was had
B. was have
C. have
D. had
Adjective › View

a. Young
b. Old
