I don’t remember who came first，but we all________the lecture

Attention, please. All of you students _______ remain in their seats until all the papers have been collected.

How do you think of my composition— Almost perfect ________ one spelling mistake.

The layer thought it unfair for his client to _______ ten years in prison just because he had helped the robbers escape.[ ]

Will you _____ our pet dog while we are on vacation? — Well, that ought to be no problem.