第一单元：DDDABCBCBCCDBACACDCBCABDBCAABBCABCDWeekends; result; sleep; although; difference; less; habit; maybe; never; sameReading; keeps; twice; health; helps; to stay; to speak; finishing; active; watchDrinking...health; don't...times; different from;same as...; as for...Tom doesn't do his homework at school....
