My most devoted friend, Professor Yang, _______ often go hiking when he lived in the mountain that was covered with forest.
It is usually warm in my hometown in March, but it ______ be rather cold sometimes.
Please put the bottle on the top shelf, out of the children’s __________.
When he was out of ___work, he was involved in crimes of violence and was put in ___ prison at last.
We waited and waited.________ we had been looking forward to.
— Are you going to the concert tomorrow? — ___________I’m not sure whether I could finish my paper before that.