The Spring Festival is the most joyful time of the year, but it can also be ______ . With all the traveling, visiting relatives, and gift-buying, the holiday can become a tense time for many families.
Most Jewish families ________ many difficulties during the Second World War.
As is reported, it is 100 years ________Qinghua University was founded.
It’s bad manners to keep _______ when your teacher asks you a question.
_______ was a time _______ women had no right to vote.
Jack asked John ______ when he met him in the street.