Keep ______ and never give up, and your dream will come true one day.

__ a tough challenge though, the Chinese women’s volleyball team won an Olympic title in Rio.

Please arrange an interview with the manager tomorrow，or ________ it is convenient to him.

When he got home, he would find his house _______and he didn’t know______ to do with the robot.

Paper bags produced every year are ____ the world’sproduction of vehicles