. The old man, who _______ the World War II, is Peter’s grandfather.

Diane would ________ a good teacher---she’s so patient.

(2012·合肥高二检测) Every pupil has his own potential so it is not proper to _______ them _______ two kinds.

After a short ________, I got my bag from the thief’s hand successfully.

In order to find out how the famous painting was stolen as soon as possible, more experienced policemen have been sent to _____ the case.