[ Grammar ]
I ___ a mountain once.
A. have climbed
B. climb
C. has climbed
D. climbed

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Future PassiveVerb BEBe used to vs used toMixed Present TensesPrepositions and Prepositional PhrasesSimple Future TensePresent Perfect vs Past SimpleTenses and ComparisonsGrammar for TOEFLGrammar: is/are/was/wereOther quiz:
Present Continuous › ViewWe …. now.
A. not are study
B. is not studying
C. not are studying
D. are not studying
Mixed General Quiz › View
Most drugstores sell snakebite ___.
a. anecdote
b. antidote