Question

I promised ________ ,so my parents feel very happy． [　　] A． study hard B． to study hard C． study hardly D． to study hardly

Answer 1

答案：B
解析：

promise to do sth．“許諾做某事”，故排除A和C。另外hard“努力地”，hardly“幾乎不”，這兩個詞都是副詞，但根據題意應該是努力學習，故選hard。