[ Grammar ]
My dad has known his best friend …………… they left school.
A. for
B. when
C. since
D. after

Random Topics:
Grammar & VocabRegular and Irregular VerbsPreposition & GerundConnectives (because, due to, owing to, because of)Active & Passive VoiceFuture Simple TenseSuch...that, so ......thatGerund or InfinitiveComparative - SuperlativeSocial Media VocabularyOther quiz:
Grammar › ViewYou ………………… go – we haven’t finished yet.
A. needn’t
B. mustn’t
Modal Verbs › View
She ___ speak Mandarin fluently because she has been learning it for years.
A. can
B. must
C. doesn’t have to
D. should
Past Progressive Tense › ViewMartha … … (CHAT) on the Internet.
A. were chatting
B. was chatting
C. is chatting
D. are chatting
Grammar › View
Identify which question the underlined adverb answers.
The old woman threw the dirty toy outside.
A. where?
B. when?
C. how?
D. why?
