16. The computer program is a puzzle to me. The more I think of it, the more questions I think of _____.
—How could you________my sister so easily in the crowd? —Because she stood out in her bright red dress.
In order not to let the others hear what he said,he________the news to me.
——Shall I give you a ride as you live so far away? ——Thank you. ______.
Their youngest child is at the stage ___________she can say a few words but not full sentences.
It was Paul’s low test scores that_________ his chances of getting into a good school.