It was hard for him to learn English in a family, in which_____ of the parents spoke the language.
Tom ____ desperate in front of the locked door.
The science of medicine, _____ progress has been very rapid lately, is perhaps the most important of all the science.
This is the largest clock in the world, _____ the minute hand is six meters long.
Sarah hopes to become a friend of _____ shares her interests.
Liu Xiang is ________ Yao Ming.