[ Grammar ]
How much time do you spend ________ the Internet per day?
A. surf
B. to surf
C. surfing
D. to be surfing

Random Topics:
Articles with Proper NounsPast simple regular verbsZero Conditional SentenceWh-QuestionObject PronounsDefinite pronouns (Subject, Object, Reflexive)Future - will / going to / present continuousAdverb ClausePresent and Past Simple PassivePresent TenseOther quiz:
Tenses › ViewThe baby ______when his mum put him in the cradle.
A. cries
B. cried
C. crying
D. was crying
Tenses › View
I …. the software bug yesterday.
A. have fixed
B. fixed
C. had fixed