[ Word Form & Verb Tense ]
In 21st century, scientists continue to look for new ways _____ serious disease and slow down the ageing process
A. to treat
B. treat
C. treatment
D. treated

Random Topics:
Present and Past Simple TensePast ModalsGrammar ModalsAdverb of MannersComparative and SuperlativesPresent Perfect: for/sincePresent Simple vs Past SimpleAdverb of FrequencyIN, ON & ATPresent Tenses: Simple vs ContinuousOther quiz:
Tenses › ViewHe______ for London one year ago.
A. left
B. has left
C. leaves
D. had left
Vocabulary › View
CUBE: I need one more cube.
A. Sharp thing used for joining things
B. solid square block
C. Tall cup with no saucer
D. Piece of stiff paper folded in half
He happily sang all night, last night.
A. simple past
B. past continuous
C. past perfect
Modal Verbs › View
When I was 15 years old, I ________ run 100 metres in 11 seconds.
A. have to
B. would
C. should
D. could
