[ Subject Verb Agreement ]
Regular exercise ________ to boost the immune system.
A. help
B. helps

Random Topics:
ApologizingGrammar: so and suchConditional and SubjunctiveTenses - AuxiliariesWho or WhomArticlesGrammar & VocabBASIC GRAMMAR - PRONOUNSTimePresent Tense vs Past TenseOther quiz:
Grammar › ViewIdentify the preposition. Can you jump over the hurdle?
A. you
B. jump
C. over
D. hurdle
Present Perfect and Simple Past Tense › View
I _____ (know) Julie for three years – we still meet once a month.
A. knew
B. have knew
C. has knew
D. known
E. have known