So difficult _______it to work out the p
题型:选择题
问题:
So difficult _______it to work out the problem that I decided to ask Tom for some advice.
A.I did find
B.did I find
C.I’ve found
D.have I found
So difficult _______it to work out the problem that I decided to ask Tom for some advice.
A.I did find
B.did I find
C.I’ve found
D.have I found