Do not disturb me. I ________ letters al
题型:选择题
问题:
Do not disturb me. I ________ letters all morning and have written ten so far. [ ]
A. write
B. have been writing
C. have written
D. was writing
Do not disturb me. I ________ letters all morning and have written ten so far. [ ]
A. write
B. have been writing
C. have written
D. was writing