[ 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

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Grammar › ViewThe meeting was held in a room near the library.
A. Simple
B. Compound
C. Complex
D. Compound-complex
Type of Sentences › View
The smoke alarm battery should be changed at least once a year __
A. ! Exclamatory
B. . Declarative
C. . Imperative
D. ? Interrogative
. My wife’s mother is my _______.
A. aunt
B. mother-in-law
C. sister
D. mother
Personal Pronouns › View
… are watching TV. (my mother and I)
A. Them
B. We
C. They
D. You