You are late again. The class ________ for five minutes. —Sorry. There is something wrong with my bike.

Where _______?—I got caught in the traffic, or I would have been here sooner.

We should bear in mind that socialdevelopment and balance of nature should go in

The terrible rainstorm hit the small villages and .—How unlucky the villagers were!

What class are you in—I’m in ____, ____.