你是Lucy，寫一封給老同學(xué)Allen的邀請(qǐng)信，邀請(qǐng)他參加下個(gè)星期日下午4點(diǎn)(12月23日)的校友聚會(huì)。希望Allen盡快回信接受邀請(qǐng)，以便他們及時(shí)做好安排。

完形填空21

• A、stopped

• B、insisted on

• C、finished 
  

• D、given

How did Binet decide which task to include on his first test?

• A、He first worked out thirty tasks for mentally deficient children．

• B、.He first gave all the tasks to many children both younger and older．

• C、He first gave the tasks to many children he thought appropriate．
  

• D、He first gave some of the tasks tO different groups of children．