[ Grammar ]
Scientists have found that people who are active at a moderate level experience a long list of health benefits and that physical activity —- vigorous.
A. has to be
B. must be
C. needn’t be
D. had better be
Random Topics:
Phrasal VerbSimple and Compound SentencesLinking Words and ConjunctionModals and Past ModalsPossessive Adjectives and Possessive PronounsWish, Unless, If sentencePast Tense vs Future TenseRun-On SentencesAdverbial Clause / If / ComparativesModal ProbabilityOther quiz:
Modals › ViewI ________ make a move now as it is getting dark.
A. shall
B. should
C. might
D. shouldn’t
Grammar › View
Alexander Fleming ________ penicillin.
A. was discovering
B. discovered
C. discovers
Grammar › ViewShe has had toothache ———————
A. for December
B. since last week
C. next week
D. yesterday
Idioms › View
Wow, those are really cool sunglasses.
a. slits
b. slides
c. shades