[ Adverb and Noun Clauses ]
It was in 1875 ………….. joined the staff of the astronomical observatory at Harvard University.
A. that Anna Winlock
B. Anna Winlock, who
C. as Anna Winlock
D. Anna Winlock then

Random Topics:
Modals in the PastVerbs + Gerund or InfinitiveInfinitiveRoot WordPresent Tense (Negatives and Questions)Auxiliary ModalPresent Continuous for FutureModal VerbsTag QuestionQuantifiers MixOther quiz:
Grammar › ViewWhat’s your name?
A. His name is Robert
B. Her name is Rossy
C. Their names are Gil and Bill
D. My name is Sandy
Grammar › View
Does the sentence below use a gerund?
They are listening to the news because there is a typhoon.
A. with gerund
B. no gerund
Verb Types and Tenses › ViewWhat is the underlined word in ‘The soaring hawk glided along on air currents in the clear blue sky’?
A. Gerund
B. Participle
C. Infinitive
D. Present Progressive Verb
Subject-Verb Agreement › View
Neither his mother, nor his mother _____ mahjong.
A. Play
B. Plays
C. Played
D. Playing
