— __________ did you pay for it?— $10.

Students are always interested in finding out ________ they can to with a new teacher.

）Why ______ ask your mother to shop with you.

 The Frenchman pointed to the spoon and asked me _________ to call that in Chinese.

(2013·甘肃河西五市一模)Look! The ground is wet. It must have rained last night, ________？