a written permission, he had to write another letter to the president of the university.
You _____ read a book in the sun—it'll do harm to your eyes.
A fire broke out in the building at 7:30 on Tuesday morning, ____ in the death of a young girl.
—I'll call you ______ I arrive in Shenzhen. —Thanks, and good luck.
Both Class 3 and our class won't be able to finish the work unless they ___ each other.
Why ____ to go abroad to study when there are so many good universities at home?