1 . We all have times of insecurity in life, _____ there is nothing to do but bravely face the feelings of doubt.

A．which

B．when

C．where

D．that

2 . We live in the age of distraction, ______ we can be disturbed by all of kinds of useless and false information.

A．which

B．what

C．when

D．where

3 . I watched Mike's adolescence, _____ he ran into trouble, _____things at the wrong time and misunderstood by many people.

A．when; saying

B．which; said

C．when; said

D．which; saying

4 . A grand celebration along with the military parade was broadcast live at 11 am,______ millions of families were sitting in front of the television, watching it.

A．which

B．when

C．what

D．that

5 . 5G commercial service’s being officially launched has opened a new digital age, ____ not   only technology but also people’s work capacity and lifestyle will be upgraded.

A．as

B．where

C．when

D．which

6 . The old pictures bring the Greens to the days       they spent together,       life was hard but happy.

A．which; when

B．which; whose

C．when; whose

D．when; which

7 . The   first   trials   of   Aspirin   took   place   in   1899, ____ the   company   Hoffmann   worked   for ___distributing the medicine in powder form to physicians to use with patients.

A．when; began	B．which; beginning
C．when; beginning	D．which; began

8 . There is a big change from the late 1970s in China, ______ people first began leaving China for study and work.

A．where	B．which
C．when	D．from which

9 . The Tang Dynasty is generally considered to be a golden chapter by people worldwide, ______ the Chinese civilization influenced many neighboring countries.

A．where	B．who
C．which	D．when

10 . The Tang Dynasty is generally regarded as a golden chapter by people worldwide, ________ the Chinese civilization influenced many neighboring countries.

A．where	B．when
C．which	D．who