15. --- Who are the teenagers gathering at the school gate? --- Well, if you _____ know, they are all my visiting students.
Jack was late for nearly two hours this morning but he gave such important reasons he was excused.
Although this kind of vegetable tastes , yet it is rich in nutrition and good for your health.
The school board has teachers to spare no effort to help the students who have fallen behind in studies.
In this new city, we everyone will meet the when we don’t know what to do.
— Are the two dresses of the same size and price?— Yes. You may take , if you like.