I’m in Class4. Are you in Class4, ____—Yes, I am.

Professor Smith. I didn’t finishthe assignment yesterday.—Oh, you___________ have done it asyesterday was the deadline.

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

Have you seen the film “Titanic” ________ leading actor is world-famous ?

One witness said that he’d seen the suspectrun out of the store after it___.