【題目】Most of the students in the Occupy Central movement in Hong Kong ______ have participated for more rights, but what they did caused serious effects on people’s living.

【題目】Is there a certain cure ___ lung cancer yet?

【題目】From facts，scientists have ________that more energy is being absorbed from the sun，throwing the earth's energy “out of balance”．

【題目】_________ that causes heavy haze sweeping over china remains unknown to many scientists.

【題目】－I've studied gardening as a hobby. Could I make some suggestions?

【題目】He is a skillful worker. I am sure he has enough ________to fix all the________.

【題目】Don't be afraid to ____ help if you have any further problems.

【題目】You're standing too near the camera. Can you move________？

【題目】－I have seen so little of Mike________. Is he away on business?

【題目】It's everyone's desire that every effort ___ to realize the China Dream.