How come ___________—I had to look after my sick brother.

The traditional approachwith complex problems in our studies is to break them down into smaller,more easily managed problems.[ ]

In many factories computers have___________ the work of thousands of workers.

read another book this week.－Well, maybe _____ is not how much you read but what youread that counts.

Mr. Smith, would you please speak a little more __________— Sorry! I thought you would follow me.