So______ that most parents are too worried to let their kids travel alone at the beginning of the new term.
By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, _______appeared a rare rainbow soon.
Yesterday she sold her car, ______ she bought a month ago.
The Science Museum, ________ we visited during a recent trip to Britain, is one of London’s tourist attractions.
The book was written in 1946, ____ the education system has witnessed great charges.
Some pre-school children go to a day care center,____ they learn simple games and songs.