In order to prevent stress from being set up in the metal, expansion joints are fitted which （）the stress by allowing the pipe to expand or contract freely.

Weeks （）before anyone was arrested in connection with t...

单项选择题Weeks （）before anyone was arrested in connection with the bank robbery.

The professor found himself constantly （）the question: ...

单项选择题The professor found himself constantly （）the question: "How could anyone do these things"

More than 85 percent of French Canada's population spea...

单项选择题More than 85 percent of French Canada's population speaks French as a mother tongue and （）to the Roman Catholic faith.