oMr.Smith won't be able to attend the meeting at seven o' clock tomorrow morning,because he ___(do
问题描述：
oMr.Smith won't be able to attend the meeting at seven o' clock tomorrow morning,because he ___(do
Mr.Smith won't be able to attend the meeting at seven o' clock tomorrow morning,because he ___(do)something important.
答
试试：
“will be doing”
看看是否合用.