用所给单词的正确形式填空。小题1:Since she _____ (come) here, she have visit

用所给单词的正确形式填空。
小题1:Since she _____ (come) here, she have visited many places in the city.
小题2:Do you have a hard time ______ (wait) for the taxi in the evening?
小题3:Students should speak to the teachers and parents _____( polite).
小题4:Don’t worry! I can look after _____(I).
小题5:There are six ______ (hundred) students in our school.