我国实行按劳分配的原因是( )①生产力总体水平低、多层次②生产资料公有制③社会主义条件下人们劳动的性质和特点④生产资料私有制
--- I’m sorry I ____ your MP4 at home. --- That’s all right. Don’t forget ____ it to me tomorrow.
Smoking is not allowed in public places since May 1st. It may be a good chance for some people to ______ smoking.
--- I feel really tired. --- ________
—What did you say just now? —I asked __________.
—1 doubt if he ___________ in the discussion tonight. —I believe if he ____________his homework, he will join us.