about ________ conference you attended last week—To tell the truth, it was too boring, you know, ________ conference like that.

Good friends __________ we are, I still find her difficult to understand at times.[ ]

When we plan our vacation, mother often offers _____ suggestions. [ ]

Did the couple appear at your birthday party yesterday—________. Because they were at their son’s wedding then.

The moment we heard the news of the earthquake, we began to ________ the work to rescue those who were trapped in the building.