There are over 58,000 rocky objects in ______ space, about 900 of which could fall down onto ______ earth.
A. the; the B. /; the C. the; a D. a; /
Even though they are not doubtful at all _______ John will pass the exam, I still wonder ______ he is fully prepared.
A. whether; that B. that; whether C. that; that D. whether; whether
About 10,000 enthusiasts took part in the 2013 Sports Lottery New Year Climbing ________ on Tuesday at the Beijing Badaling section of the Great Wall.
A. incident B. accident C. event D. affair
When I graduate from this famous university, I’ll _______ what I have learned to everyday life.
A. use B. apply C. devote D. stick
So difficult ________ it to live in an English-speaking country that I determined to learn English.
A. I have felt B. have I felt C. I did feel D. did I feel
In____review of 44 studies, American researchers found that men and women ____who ate six key foods daily cut the risk of ______ heart disease by 76%.
A. a; the B. the; a C. a; 不填 D. 不填； a
