[ Present Perfect Continuous Tense ]
The Scientist mixes the formula
A. The Scientist has been mixing the formula
B. The Scientist has been mixxing the formula
Select your answer:
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Simple Verb Tenses › ViewChoose the sentence using the past tense.
A. I know it’s you.
B. I have known it was you.
C. I knew it was you.
D. I know it is you.
Modal Verbs › View
John _____ be here. He is away on vacation this week!
A. may not
B. might not
C. needn’t
D. can’t