问几道英文题，请尽快回答谢谢！
1.Pleaseexcusemydirtyclothes.I___________thehouseforthelasttwohours.(1)amcleaning(2)h...
1.Please excuse my dirty clothes. I ___________ the house for the last two hours.
(1)am cleaning
(2)have cleaned
(3)have been cleaning
(4)was cleaning
2.Ai Tong __________ fruits at our school canteen since 1990.
(1)sells
(2)was selling
(3)has sold
(4)has been selling
3.Grandmother ______________ in the garden for the past two hours.
(1)have working
(2)has been working
(3)is working
(4)will be working
如果最后一题是2的话那第一题就是3了吧 展开
(1)am cleaning
(2)have cleaned
(3)have been cleaning
(4)was cleaning
2.Ai Tong __________ fruits at our school canteen since 1990.
(1)sells
(2)was selling
(3)has sold
(4)has been selling
3.Grandmother ______________ in the garden for the past two hours.
(1)have working
(2)has been working
(3)is working
(4)will be working
如果最后一题是2的话那第一题就是3了吧 展开
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