What made your skin look so terrible –_______ to the sunlight for a long time.

One concern people have now is ______ printing passengers’ names and ID numbers on tickets will make it harder to protect their private information.

下列各句中，没有语病的一句是

It is in that primary school ________ Mary once studied for six years that she will build a library，________ delights all the students and teachers in the school.

If you keep practicing your son in football, he ________ to be a famous player.[ ]