问题
We are sure _______ “Space Travel” can receive thousands of Internet hits a day.—I agree. It has become one of the hottest topics recently.
A:if
B:that
C:whether
D:what;
B:that
C:whether
D:what;
正确答案是：
同类题型
I’m amazed to hear from my school teacher again. _______，it is ten years since we met last.
er busy he is, he willsome time for exercise every day—No wonder he is always so energetic
________ by the growing interest in nature，more and more people enjoy outdoor sports
_online shopping has changed our life , not all of its effects have been positive.