I walked to the top of the hill with my friend, _____ we enjoyed a splendid view of the lake.
We look forward to the day when motorcars will be replaced by some less dangerous ____ of transport.
Mother _________father to give up smoking, but she failed.
— Hey, buddy, let’s go, remember the movie, Up(飞屋环游记)? — Sorry, I’m busy .How about ________ ?
______, most of the spelling mistakes can be avoided.
—Which of the two books will you take? —I’ll take ______and I think______ of them is really helpful to me.