“Mary looks hot and dry.” “So _____ you if you had so high a fever.”

According to the rules and regulations, all payments ________ be made in cash in the shopping center.

(2013·高考新课标全国卷Ⅱ)Since nobody gave him any help，he________have done the research on his own.

(2013·成都一诊)Parents are doing all they ________ to help their children achieve their ambitions.

—______ I take the magazine away from the reading room?— No, you mustn’t. You ______ read it only here.