________ the boss has arrived, let’s begin our discussion right away.
---You seem busy these days.---Yes.I’m writing a story.You know, it’s really not easy to write _______ with attractive plots.
With doubts _______ through my mind, I felt it necessary to carry out a research.
Every Monday, my English teacher would cheerfully ask me _______ my weekend had been.
---The zookeeper was really annoyed with me.--- How could he have been if you _______ stones at the animals?
---Do I have to bring my camera tomorrow afternoon?---I think so.We _______ the Botanical Garden then.