It is well known to all that a machine needs fuel to run; ,man needs food to live on.
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.
We have an adviser on hand in this activity _______ you have any worries or problems.