[ Gerunds/Infinitives ]
They keep in shape by every day.
A. exercising
B. to exercise

Random Topics:
Grammar - must & have toGerund & ParticipleGrammar for IELTSComparative & Superlative AdverbsPresent Simple Tense PassiveDirect and Indirect QuestionLinking Words & PhrasesQuantifiers: too many, too much & enoughPronoun-Verb AgreementPassive and Active VoiceOther quiz:
Modals - Have to or Should › ViewYou smell and you’ve got a cough. You ________ smoke.
A. don’t have to
B. shouldn’t
Modal Auxiliary Verb › View
Which modal verb do we use when we are obliged or required to do something?
A. Can
B. Should
C. Could
D. Must
He walks so ___ in those boots.
a. heavy
b. heavily
Grammar › View
John and his brother __________ perspiring profusely when they played football in the park.
A. is
B. are
C. was
D. were