had been looking forward后面加to do 还是doing?
looking forward to do和looking forward to doing
__we had been looking forward to.
look forward to doing和looking forward to do
look forward to是加doing还是加do?
hard后面加doing还是to do
refuse后面加to do 还是doing
discover后面加to do还是doing?
adjust to 后面加doing还是do?
spend后面加doing还是to do?
The farewell party the graduates had been looking forward to
The day we had been looking forward to
The party the students had been looking forward to _____yest