Question

ame

(3)の問題が分かりません！
出来ればshouldの他の使い方も教えてくれると助かります！

練習問題
1(助動詞の用法〉次の文の()内から適する語を選び, ○でかこみなさい。
(1) She can (tead, reads, reading) an English book.
(2) Must Ken (cléan, cleans, cleaned) his room?
(3) You should (don't, aren't, not) say that to your teacher.

助動詞 should