The river ____are covered with trees is very long.A which banks B the banks of which C whose the banks D of which banks
It doesn't matter ________ you turn right or left at the crossing—both roads lead to the park.
________ 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.