Life is always full of challenges. It seems that _____ one problem is solved, a new one will appear. It’s a good choice to face and overcome them bravely.
A. when B. because C. until
Try to do these things in your daily life to make the world better. Use cloth shopping bags, not plastic _____. After ______ a plastic bag, wash it out and let it dry. Then you can use it over and over again.
A. one, uses B. ones, using C. ones, use
Thanks to the new traffic rules ______ at the beginning of this year, there are fewer and fewer traffic accidents. The public also like to cooperate with the government to set up a safer walking environment.
A. found out B. watched out C. carried out
---New Year’s Day is coming, I’d like an expensive present for my parents. But I can’t ____it.
--- As long as you express your love from the bottom of your heart, they won’t care about whether the price of the present is high or low.
A. pay for B. buy for C. spend on
---May I play computer games now, Mum?
---No, you ______. You’d better______. Music can make you relaxed!
A.needn’t, to listen to music
B. mustn’t, listen to music
C. don’t have to, to listen to music
China’s high-speed railways(中国高铁)________ rapidly during the past few years. Now many foreign countries invite them to make contributions to building up their homelands.
A. have developed
B. developed
C. develop
