Our teachers often tell us,“the harder you study, the more questions you will think of ________．”
A.askingB.to askC.being askedD.to be asked在线课程B
考查非谓语动词。此题容易错选asking。因为think of已经有自己的宾语the more questions，所以选to ask目的状语，意为“想出更多的问题来问”。