You’ll want two trees about ten feet apart, from ________ to suspend your tent.
A. when
B. then
C. there
D. which
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I’m sorry _________ you waiting so long.
A. to have kept
B. to be keeping
C. to keep
D. to have been kept
I planned ________ the problem, but failed to do so.
A. to solve
B. solving
C. to have solved
D. solve
实现中国梦,必须要弘扬()。
A. 中国制度
B. 中国道路
C. 中国精神
D. 中国文化
()是历史发展和社会进步的主体力量。
A. 人民群众
B. 党员干部
C. 国家领导
D. 社会英雄