根据句意，用括号内所给单词的适当形式填空。

小题1:He is the __________(four) child of his family.

小题2:My father __________(teach) Chinese in a secondary school.

小题3:How many _________ (wait) are there in the big restaurant?

小题4:The schoolbags on the shelf belong to ________（they）.

小题5:The things in the shop are too expensive and there are few _________(shop) there.

10个月男婴，因腹泻三天入院。病后每日排水样大便十余次，量较多。2天来尿少，12小时来无尿。体检：前囟凹陷，哭无泪，皮肤弹性差，肢端凉。腹胀，腱反射减弱，此患儿补钾时下列哪项不正确

A．输液后有尿即可开始补钾

B．静脉输液中氯化钾浓度不得超过0.5%

C．全天静脉滴注时间不应少于6～8小时

D．静脉补钾后继续口服氯化钾4～6天

E．补充氯化钾总量每天3～4mmol/kg