Hedoesn'tknowwhattosay,foritisthefirsttimethathe______withagirl.
A、wentoutherehasbeenagreatincreaseinretailsales,____﹖
Therearesomepolicecarsinfront.Whatdoyousuppose_____?
Generallyspeaking,thehardoneworks,_______.
______thatnoonewaseverpreparedforit.
Manypeopleattendvariouspubliclectures,chiefly______themselvesfamiliarwiththelatestdevelopmentofdifferentfields.