[ 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:
Comparison Degree › ViewThis lesson is ______________ yesterday’s lesson. (boring)
A. most boring than
B. more boring as
C. boringer than
D. more boring than
Prepositions › View
At Tet, people usually light fireworks which can scare _______________ bad luck
A. away
B. for
C. about
D. on
E. of
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