Ashisbestfriend，Icanmakeaccurateguessesabout

来源：语文精选馆 2.36W

As his best friend，I can make accurate guesses about ______ he will do or think.

A. what B. which C. whom D. that

解析：此题考查宾语从句的用法。在本句中，what引导了一个宾语从句，其中what 既作about的宾语，又在宾语从句中作do和think的宾语；而that在宾语从句中不作成分，故选择what。