-Has your son finished his composition yet?-I don't know.He _____ it this morning.A.wroteB.has writtenC.had writtenD.was writing

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-Has your son finished his composition yet?-I don't know.He _____ it this morning.A.wroteB.has writtenC.had writtenD.was writing

-Has your son finished his composition yet?-I don't know.He _____ it this morning.A.wroteB.has writtenC.had writtenD.was writing
-Has your son finished his composition yet?-I don't know.He _____ it this morning.
A.wrote
B.has written
C.had written
D.was writing

-Has your son finished his composition yet?-I don't know.He _____ it this morning.A.wroteB.has writtenC.had writtenD.was writing
D.was writing

A

D,绝对正确

was writing