Heis’onlyaboyofthreebuthecanlearnthepoem______

He is’ only a boy of three, but he can learn the poem ______heart.

A. by

B. at

C. in

D. to

正确答案：A
10．答案为A他仅仅是个三岁的男孩但他能背诗固定搭配learnby
heart“背诵……”