问题详情:
—Could you go to buy some salt for me,Vince?
—I'd love to,Mum,but I ________ my homework.
A. do B. did C. am doing D. was doing
【回答】
C
知识点:动词时态
题型:选择题
问题详情:
—Could you go to buy some salt for me,Vince?
—I'd love to,Mum,but I ________ my homework.
A. do B. did C. am doing D. was doing
【回答】
C
知识点:动词时态
题型:选择题