the answer is "Shlemiel's treatment of the dog shows that Shlemiel is a kind, tender person.'
The sentence that does not have an error in subject and verb agreement is, "Lemonade and iced tea mixed together is a refreshing drink". As you notice it, the subject of the sentence is "lemonade and iced tea", but takes the singular form of the verb. It is because the words "lemonade and iced tea" only refers and describes one thing, which is the word "drink".
You went to the bed early.
She studied in the library.
They had dinner last night.
He felt sad yesterday.
D. Past It fits the sentence best, because you don't go through the school and the supermarket to get somewhere, you got past it.
School calendar should be changed.
Nowadays most school calendar is planned as one-year activity, in some countries the beginning of the calendar is around September (Europe), in other countries is February or March (Brazil). Because of this when a student moves from one country to another they lose a complete term or year, because is really hard to math this calendar.
Also when a student does not have a productive year they lose a full year, instead school calendar could be six-month period. That way students don’t feel so much pressure by the end of term because of accumulative pressure or content.