______ without friends ______ the most difficult challenge for Chuck while living on the island.
| A．How to survive, is | B．How does he survive, are |
| C．How does he survive, is | D．How to survive, are |
191. My enthusiasm for Chinese football team gradually _____ because of their countless failures.
| A．disappeared | B．faded | C．ran out | D．gave up |
192. When he worked in Japan, he ______ go to that café after work every day.
| A．could | B．used to | C．would | D．Might |
193. What they need at present _______ science and technology.
| A．is | B．has | C．are | D．Were |
194. With Mr. Brown _______ us, we will surely make more progress in our oral practice.
| A．help | B．helping | C．to help | D．Helped |
195. The Yangtze River is _______ home to a diverse range of fish and animals including the white-flag dolphin, a rare animal.
| A．/ | B．one | C．the | D．A |