[ 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:
Modals › ViewYou…… Improve your spelling.
A. Must
B. Shall
Modal Verbs › View
I think there ______ a mistake in your tax return, but I’m not sure. You should check it.
A. must
B. might
C. can’t
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