单项选择题
A. slack away B. take in C. hold on D. let go
海关官员（）A. customs officerB. chief officerC. immigration ...
单项选择题海关官员（）
A. customs officer B. chief officer C. immigration officer D. second officer
旗（）A.flightB.flyC.fireD.flag
单项选择题旗（）
A.flight B.fly C.fire D.flag
移民局官员（）A. immigration officerB. custom officerC. health...
单项选择题移民局官员（）
A. immigration officer B. custom officer C. health officer D. chief officer
