It’s great that all the visitors who _______ on the island were saved.
The weather turned out to be fine yesterday. I _______ have taken the trouble to carry my umbrella with me.
When was it you met him in the library?
—Where are the children? The dinner’s going to be completely ruined.—I wish they ________ always late.
In order to be a good teacher, you have to ______ your imaginations and life experience.
Your suggestion on how to improve English writing ability is too general. Could you make it more _______?