[ Progressive Verb Tenses ]
The door was opening slowly.
A. was opening slowly
B. opening slowly
C. was opening
D. door was

Random Topics:
Present and Past Perfect TensesPrepositions of Location, Movement and TimeSimple Past TensePast ParticiplesVerbs and PrepositionsArticle the or zero article (-)English ArticlePresent SimpleAdverbial ClauseFirst Conditional, Future Time ClausesOther quiz:
Conjunctions › ViewJack takes his vitamins daily ___ be sick
A. in order not to
B. so as to not
C. so that not
D. in order to
Grammar › View
A: Have you ____ lived in another town?
B: No. I’ve lived here ____ I was born.
A. just, since
B. just, for
C. ever, since
D. ever, never
Preposition and Conjunction › ViewYellow ______________ red are my favorite colors.
A. so that
B. but
C. or
D. and
English Morphosyntax › View
Kwan likes to read maps, ____________ Angelo doesn’t.
A. either
B. but
