[ Vocabulary ]
a small hill or mound
A. knoll
B. burrows
C. fiends
D. frequently

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Present Forms and Narrative TensesWill or Going toCommon ErrorPresent Perfect - Just, Already, YetGerundPresent Simple VS ContinuousSimple Present and Present ContinuosCan/CouldSentence Adverbs & Third ConditionalTOEFLOther quiz:
Grammar › ViewWhat do you need to do tomorrow?
A. I’m going to the pet store.
B. I have to wash my dog today.
C. I have to send a letter tomorrow.
D. I’m going to Tennessee to visit my friend.
Modal Verbs › View
. If he tried harder, he ___ solve the problem.
A. can
B. could
C. able to
D. may