WhenyouwereinLondon,didyouvisit________________Tower,too?
Helost________________parentswhenhewasachild.
is,are,was,were,willbe,aregoingtobe,have,has,hadThebeautiful________somethingthattheinnocent________notalwaysabletoappreciatefully.
Thereisadeadlock(僵局)inthediscussionwhenneithersidegives________totheother.
EmpiricalstudiesshowthattheprocessofSLAisaprocessofconstructingandmodifyingrulesofcommunication.
