The president was so absorbed in his work that not a sound ______.
The farmers thought of ways ________ their trees.
---Do you think our basketballers played very well yesterday? ----______.
—Do you think you could successfully light the flame at the opening ceremony? —_______. This is not the first time for me.
The father and the son entered the tiger area _______ two doors were open at the time. Suddenly five tigers appeared, one of which killed the father.
Gilbert wasn’t ______ the time this morning, so he was late for school.