[ Grammar ]
. She ____ a science experiment right now.
A. does
B. is doing
C. do
D. has done

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Perfect Tense › ViewI …… to them three times, but I still haven’t received any comments.
A. wrote
B. have been writing
C. have written
D. had written
E. will have written
Grammar › View
….. your Mom like cooking?
A. Is
B. Are
C. Do
D. Does