有点拿不准,..1.David didn't know he ( ) difficulty finding the ho
有点拿不准,..
1.David didn't know he ( ) difficulty finding the house.so he got there late.
a would have b had c had had d has had
2 Is the house still on sale?
No,it( )
a sold b was sold c has sold d has been sold
3 The school has just been built.Teachers ( ) badly ( ) here
a were,needed b are,needed c are,needing d were,needing