[ Gerund ]
________ is a good and cheap exercise
A. run
B. running
C. runned
D. ran

Random Topics:
Adverbs of frequencyLinking Words & PhrasesSimple Present and Present ContinuosPassive VoiceInterjections, Tag Questions and Nouns of Direct AddressGrammar - some / anyProgressive TensePrepotitionsSentence TransformationTransportation VocabularyOther quiz:
Modal Verbs › ViewMy son has always been a clever boy; he ___________ read when he was three.
A. could
B. might
C. may
Modal Verbs › View
When I got to the cinema, the movie had already started; I ___ there earlier.
A. should have got
B. ought to get
C. must have got
D. might have got