My sister studied hard at school when she was young, which contributes ________ her success in her career.
Mr.Smith had to go to work by bus this morning as his car ______.
Food and fruit are forbidden in the library, ______ you are allowed to have drinks and sweets with you.
Being ______ highly skilled reader is ______ key to becoming successful in the Information Age.
It’s so nice to hear from her again.______, we last met more than thirty years ago.
--QQ,as a means of communication,is quite popular among us and costs less than the traditional forms.--______________.