Don’t interrupt me. I ________ letters all morning and have only finished five.
- A.
write
- B.
have written
- C.
have been writing
- D.
am writing
C
考查時(shí)態(tài)。句意:別打擾我,我一上午都在寫信,到現(xiàn)在才寫好五封。現(xiàn)在完成時(shí)表示從過(guò)去某一時(shí)間開始的動(dòng)作一直到現(xiàn)在還在繼續(xù)。
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