1 . It was when we were returning home______I realized what a good feeling it was to have helped someone in trouble.(用适当的单词填空)

2 . It was 80 years before Christopher Columbus crossed the Atlantic ________ Zheng He had sailed to East Africa.

3 . It was only after a family related conversation ______________ I found out she was actually my distant cousin.

A．when	B．that
C．which	D．who

4 . They felt ________ it was high tax and low income ________ contributed to the extreme misery of the working people at the bottom of the ladder.

A．/；that	B．that; which
C．that; what	D．/; which

5 . It was when she first arrived in China _____ she developed a passion for paper-cutting.

A．where	B．that
C．how	D．why

6 . It was only after he had read the papers ________ Mr. Gross realized the task before him was extremely difficult to complete.

A．when

B．that

C．which

D．what

7 . 是“有志者事竟成的”信念帮助他实现了梦想。（It was…）

8 . Some of the students in our class can’t figure out ______ it is that puts them under great pressure and makes them tired of finishing homework on time.

A．where

B．when

C．what

D．how

9 . It’s not doing the things we like, but liking the things we have to do______ makes life happy.

A．that	B．which
C．what	D．who

10 . Was it in Tianjin ________ you spent your childhood?

A．when

B．which

C．that

D．why