[ Vocabulary ]
_____________ is the study of the natural world and involves making observations and performing investigations.
A. investigation
B. science
C. observation
D. evidence

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Modal and Relative PhrasesFirst Conditional, Future Time ClausesPresent Simple and Continuous TenseNoun, Verb, AdjectiveSentence CompletionConditional SentencePunctuation and GrammarRequest with Modal Verbsso vs suchGerund - to InfinitiveOther quiz:
Vocabulary › ViewAccording to the weather ____________________, a warm front with occasional showers will reach us by evening.
A. frost
B. climate
C. forecast
D. lightning
E. flooded
Conjunctions › View
What coordinating conjunction is used to indicate addition?
A. And
B. But
C. Nor
D. For