1 . In the distance there is a hill, on the top_____ _____ stands a white temple. （用适当的词填空）

2 . Many lessons are now available online, _____ _____ students can choose for free. （用适当的词填空）

3 . He gave his daughter some money, ________ which she could buy an English-Chinese dictionary. (用适当的词填空)

4 . Most high school students，for ________ time does be priceless，are studying hard from early morning till late night. (用适当的词填空)

5 . In the office, I never seem to have time until after 5:30 p.m. _______ time many people have gone home.

A．whose

B．that

C．on which

D．by which