[ Grammar ]
They have studied animal habitats ___ three months.
A. for
B. since
C. from
Random Topics:
Phrase vs ClauseRun-On SentencesAdjectives and ArticlesFood VocabularyIf ConditionalsTenses and VerbsPast Simple Tensea, an, the, zero articleModals - Have to or ShouldModals - Conditionals - Future TensesOther quiz:
Past Tense › Viewthe bus came after I …. for forty minutes
A. have been waiting
B. had been waiting
C. was waiting
D. am waiting
Grammar › View
He in the garden since morning.
A. is working
B. work
C. has worked
D. has been working
Idioms › ViewLook! The sign says: “Keep ___ the grass”.
a. out
b. off
c. away
Mixed General Quiz › View
I’ll buy a ___ of corn flakes.
a. bag
b. jar
c. box