[ 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:
Adverbial Clause of Manner › ViewI once worked with a small creative TV program’s team at one of the TV stations in this city. The members worked very hard _____ they were robots, and didn’t seem to need any rest or vacation.
A. as
B. if
C. as if
Grammar › View
They ___ my friends.
A. is
B. are
C. am
Vocabulary › ViewWhat 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
