you enjoyed your visithere—- Yes, I’ll be very sorry______

Between the two parts of the concert is an interval,__ the audience can buy ice-cream.

When do you usually go to school– _____6:00. So I am never late ___ class.

There is hardly an environment on earth—Some species of animals have not adapted successfully.

The number of college students in Jiangsu thisyear _______ more than 500,000. But a number of students ________ attend goodcolleges now.