A. proportion B. millimeter C. made D. habit A. interval B. instead of C. perhaps D. helper A. keep B. repair C. salary D. reuse A. grow up B. apologize C. hobby D. safe A. tick B. taller C. imaginary D. at least A. consider B. earmuff C. global warming D. saliva A. look down on B. deal C. bright D. no wonder A. closed B. keyword C. be tired out D. guitar A. ignore B. crash C. volunteer D. keep to A. transmit B. burning C. get-together D. pocket money