[ Prepositions of Time and Place ]
We went skiing on the mountains ___ the weekend.
A. at
B. on
C. to

Random Topics:
Temporal Conjunctions and ConnectivesRelative ClausePronouns and QuantifiersAdjective Clause and Adverb ClauseLinking Words and PhrasesAdjectives (-ed / -ing)was wereVocabulary and GrammarModal PerfectPresent Simple x Present ContinuousOther quiz:
Grammar, Conditional Sentences, Vocabulary › ViewWe might have been at the airport for hours, if we _______ that the flight was delayed.
A. had known
B. had not known
C. know
D. knew
Tenses › View
Lately, I _______ about moving to Cilaos because I _____ unhappy with the hot weather!
A. Have thought … have been becoming
B. Have been thinking … have been becoming
C. Have thought … have become
D. Have been thinking … have become
Subject-Verb Agreement › ViewOccurring naturally (is, are) over 100 elements, or substances that cannot be separated into different kinds of matter.
A. Is
B. Are
Conjunctions and Preposition › View
The river water is severely polluted, mostly________ the dumping of raw sewage.
A. due to
B. lead to
C. because
D. so