How long have they ________________ each other— ________________.

________ I know, he has been married

ys followed the marks that they ______, until finally they found their way back to the campsite.

Is there any other student _______ wants to visit Tai Mountain?

135 Every year China’s Autumn ExportCommodities _____ in Guangzhou attracts much attention of more and morebusinessmen or merchants all over the world