问题
选择题
The students pretended_______ attentively when the teacher came in.
A.to learn
B.learning
C.and learned
D.to be learning
答案
答案:D
考察不定式的进行时,pretend to be doing,假装正在做什么,句子的意思是学生们在老师进来的时候假装正在认真学习,故选择D