These clothes are very dirty.They need ___.
The bridge, which _____ 1688, needs repairing.
“When he _____ is not known yet.” “But when he ____, he will be warmly welcomed.”
“When _____ he come?” “I don’t know, but when he _____, I’ll tell you.”
I don’t know if she _____, but if she ____ I will let you know.
He is very busy. I don’t know if he _____ or not tomorrow.