[ Tenses ]
He slipped while he ___ the stairs.
A. climbed
B. climbs
C. was climbing
D. is climbing

Random Topics:
Verb Tenses and SubordinatesVerb Tenses and Subject Verb AgreementVerbs - third personTOEIC Tenses, VerbsThings in EnglishGerunds and Infitinitivestoo / enoughused to vs be used to vs get used toVerb FormsLinking Words and ConjunctionOther quiz:
Grammar › ViewWe’re going to school … my dad’s car.
A. by
B. on
C. in
Tenses › View
By the time she arrived at the party, everyone ____
A. Already left
B. Had already left
C. Will already leave
D. Will have already left
