问题

ult as part of the passage was ________, I managed to catch hold of its meaning in the end.

A:understanding
B:to be understood
C:to understand
D:being understood;

正确答案是：

同类题型

Green products are becoming more and more popular because they are environmentally _________.

Tom often gets some letters from his pen pal. The underlined word “gets” can be replaced by “ ”.

These postcards are ________.

Lucy had few close friends. So she didn’t know ________ about the trouble.

He arrived at last, ______________.