单选题In this experiment, the students’ studies are stopped several times during the listening test and asked to report what they ______ during the pause before answering the questions.A had just been thinking about B have just been thinking aboutC are just
题目
单选题
In this experiment, the students’ studies are stopped several times during the listening test and asked to report what they ______ during the pause before answering the questions.
A
had just been thinking about
B
have just been thinking about
C
are just thinking about
D
had just thought about