In order to continue to learn by ourselves when we have left school, we must ________ learn how to study in the school now

_____ two exams coming up, I have to study really hard this weekend.

(2013·高考江苏卷)I should not have laughed if I________ you were serious

Mr. Li ____ to give a talk in our school yesterday.

The beautiful woman was ____ by the businessman’s offer of marriage and stupidly gave him most of her money.