So carelessly _____ that he almost killedhimself.

Siberian Tigers ________ and killed at such a speed that they will disappear from the earth in the near future

When do you think we will leave tomorrow? You had better __ ready at seven o’clock

I think it’s impossible for us to work out the plan in just two days. It’s too difficult.—-You’re right. We can’t be _______ careful and hard while working on it.

It’s quite ____me why such thingshave been allowed to happen.