问题
Some of my friends are interested in science, but none of them can tell ________.
A:when UFOs appeared next time
B:that horses know the way or not
C:where was this kind of plant found
D:how elephants communicate;
B:that horses know the way or not
C:where was this kind of plant found
D:how elephants communicate;
正确答案是：
同类题型
Suddenly the idea came to me Imight turn to Mr. Smith for help.
Where’s the key to the car, Li Tao ––I can’t remember ____ last night.
What makes the space shuttleis that it takes off like a rocket but lands like an airplane．
The early pioneers had to many hardships to settle on the new land.
Lily has ________ homework and she really doesn’t know ________ first.