at a loss

扫二维码，用手机阅读

I wonder what should I do ?
/ h( S0 x- N5 e! R3 C4 G: ?; wwhen the kids are so lovely
0 G: i- h3 G$ i5 A  v. `when the kids ask so much strange questions
especially when they take a exam
8 J; j4 W, M* g9 H  d/ ithe test is so easy,but the result is so bad !
I feel at a loss ,when they know the keys,but they can't write the answer in words!
* h! b4 ~7 D; a5 D" s) s  Q+ A