Let us start from now on and【 continuously 】work

Computer（）focuses on protecting information ，hardware ，and software from unauthorized us

Come on, _______ up your sleeves and start work.A) pushB) turnC) rollD) fold

Robots have ______ humans from heavy work and offer us much more free time.A．freedB．be fre

Let us start from now on and continuously

The worlds population continues to grow. There now are about 4 billion of us on the earth

As we get older we start thinking about the future and the past and the present seems to ________ from us.