[ Grammar & Vocabulary ]
Einstein is the person … showed that time can speed up or slow down.
A. which
B. who
C. whose
D. where

Random Topics:
Have toVerb PatternsModal Verbs of PermissionProgressive Verb TensesPrepositions of Location, Movement and TimeGerundSimple Past TensesDefinite vs Zero Article Abstract NounsSimple Present and Simple PastVocabulary, Adjective & PrepositionOther quiz:
Grammar › ViewWhen I saw that Mike was having trouble, I …………….. him, which he found really appreciated.
A. was helping
B. were helping
C. helped
D. help
Articles › View
Tomas Bergman, … English teacher, studied Cockney Rhyming slang in London.
A. the
B. in
C. a
D. an
Tag Question › ViewEverybody looks tired, ________?
A. doesn’t it
B. don’t they
C. does it
D. do they
Tenses › View
I ___ at this company since 2020.
A. worked
B. have worked
C. work
D. will work
