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The house still needed a lot of work, but ___ the kitchen was finished. A. instead B. altogether C. at once D. at least Let’s learn to use the problem we are facing ________ a stepping-stone to future success. A. to B. for C. as D. by If you really have to leave during the meeting, you’d better leave ____ the back door. A. for B. by C. across D. out Leaves are found on all kinds of trees, but they differ greatly size and shape. A. on B. from C. by D. in Scientists are convinced the positive effect of laughter physical and mental health. A. of; at B. by; in C. of; on D. on; at Are you ready for Spain? Yes. 1 want the girls to experience that______they are young. A. while B. until C. if D. before When she first arrived in China, she wondered what the future might have_______ for her, but now all her worries are gone. | 
