________ does he often go to Beijing—By plane.

Tim Bemers-Lee is generally considered______ the World Wide Web, on which all the information is shared by all.

Edwards’s always chasing after rainbows and never ____ a really practical idea.

Did Tom come back late last night——No It was not yet 8 o’clock ____ he arrived home

ith some books he needed ______, hewent into the book store quickly.