问题 选择题 看图选择。1. The pen is in the pencil case.A. B. C. 2. The boy is under the desk.A. B. C. 3. Twenty minus three is _________.A. 17B. 16C. 184. + = _________.A. thirteenB. fifteenC. nineteen 答案 答案：A
+ 
= _________.