New technologies have made ____ possible to turn out new products faster and at a lower cost.
Listen! ________ is knocking on the door. Go and see who it is.
It’s very cold outside. Most of the families keep their windows _________.open B. opened C. close D. closed
Jenny went into the room, took off her coat and ______ down on a sofa.
—Where __________ you find your ticket?—I __________it on the ground.
—Is ______ here? ---No, Tom isn’t here. But it’s time to have class.