When I tried to find _________that prevented so many people from taking part in the program, it seemed to me that there were two main reasons.

While watching television, _______________________

Mathilde lost the necklace ______ the evening when she and her husband took part in the palace ball

I wish to thank your student Tom, without _______rescue couldn’t be offered to my drowning boy so soon.

It was global warming , rather than other causes , ______ led to the extreme weather .