填空题He tried to () (解释), but she wouldn't listen.
单项选择题I was ______ and all of my equipment ______ working well.
单项选择题He regards that book ______ one of the worst that he's ______ read.
填空题We sat chatting for a few () (分钟) after finishing our meal.
单项选择题We' re so busy that no one in the office can ______ for any other work.