[ Gerunds ]
The medical authorities warned everyone not to drink the water without first_______it.
A. being boiled
B. boiling
C. having boiled
D. having to boil

Random Topics:
Present Progressive (Future)Grammar and Passive VoiceVerb PatternsPassive Voice - Past SimpleQuantifiersWish + Verb 2Tenses & AffixesGrammar speak,talk,say,tellPresent simple or Past simpleDescribing WordsOther quiz:
Conjunctions › ViewComplete the sentences using a coordinating conjunction / correlative conjunction.
I __________ need your help __________ your compassion because you never were on my side.
A. neither …..nor
B. both ……and
C. either ……or
D. not only ……. but also
Vocabulary › View
I have to study this __________ because we have a test on Monday.
A. mirror
B. weekend
C. clothes
D. outside
Vocabulary and Grammar › ViewThe students at my school can ______ quietly in the library in the afternoon.
A. do
B. have
C. study
D. play
Vocabulary › View
fleeting, or short life or duration
A. Ephemeral
B. Erudite
C. Abstract
D. Ponderous
