[ 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:
Articles › ViewCan you pass me______salt,please?
A. a
B. an
C. the
Prepositions › View
Complete the sentence with the right preposition.
I find it hard to concentrate ___ anything when the television is on.
A. about
B. in
C. on
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
