E-Mail is a _____of communication and it is becoming more and more popular. A. type B. mean C. means D kind
________ was most important to her,she told me,was her family.
It suddenly occurred to him ________ he had left his keys in the office.(2012·江西)
Have you noticed the problem ________ he is now in low spirits?________ come?
When the news came ________ the war broke out,he decided,to serve in the army.
________ was known to us all that Johnson had broken his promise ________ he would give each of us a small gift.