I felt somewhat disappointed and was about to leave______ something unusual occurred, which attracted my attention.

(单选题)China is sure to further reduce the poor rural population by (单选题)In the global economy, a new drug for cancer, ______ it is d (单选题)______ the price may be, they are prepared to pay it. (单选题)The students stopped talking ______ Mr. Brown stepped into t (单选题)Even though yerba mate, the national drink of Argentina, is (单选题)Many netizens are impressed with the excuse given by a teach (单选题)I’ll show you a shop ______ you may buy all ______ you need. (单选题)If ______ to look after luggage for someone else, you should (单选题)It is the teacher-and-student interaction ______ students sh (单选题)Louise had heart disease, ______ made it difficult for her t