______ almost all our time to our schoolwork in the past three months, we have almost no time for fun and play.
How about the rest of us _____ a meeting after dinner?
The blackboard was wiped _____ .
The students are _____ to hand in the exercises before class.
Was it _____ yesterday evening _____ you met him?
Could you give us the reason why you didn't do as _____ ?