[ Adverbial Clauses ]
When the boss walked into the office, his secretary ________.
A. is typing
B. was typing
C. has been typing
D. typed

Random Topics:
Grammar - Imperatives and LetPast Simple or Past ContinuousSentence CompletionGerund & InfinitiveGrammar: Have toLinking Words and ConjunctionGrammar, Literature, and VocabularyInfinitivesGrammar - Compound SentencesAntonymsOther quiz:
Grammar › ViewThe shorts I am wearing now ____________ very comfortable.
A. are
B. is
C. was
D. were
Grammar › View
What type of verb is the underlined verb?
The girls danced all night.
A. action verb
B. helping verb
C. linking verb
What might you find in the atmosphere?
A. a house
B. a plane
C. a rock
D. a whale
Grammar › View
Andrea _________her umbrella.
A. has forgotten
B. have forgotten
C. was forgot
D. has forgot
