An underwater hotel has opened in Africa，with its rooms＿on the bottom of a three－level floating building．
A. to sit B. sit C. sitting D. sat
Some scientists say that the tomato is technically a fruit，＿＿it is eaten as a vegetable．
A. although B. because C. as if D. as long as
We think anyone whose careless actions＿＿＿＿＿serious results should be punished．
A．contribute to B. adapt to C. result from D. free from
While I was looking through the news online，＿．
A. did a video of a lovely bear come up
B．did come up a video of a lovely bear
C．up did a video of a lovely bear come
D．up came a video of a lovely bear
Since the earth’s resources are getting fewer and fewer，recycling industry certainly＿＿big benefits in the near future．
A. promises B. attempts C. demands D. invests
Nowadays，it is common to see people staring at their mobile phones instead of reading a real book，＿＿＿＿＿＿many experts are worried．
A. when B．for which C．where D. about which
