All the guests at the party were dancing and singing happily _____ the electricity was cut off.

it often in winter

. It is not I but you who ___ the first to run to the goal in the competition.

When people mention planes,it will remind the parents_______ their daughter on the Malaysian Airlines plane MH370.

In China, Chinese chess and table tennis are very popular among teenagers, many of _____ have been playing them since they were very young.