— he?— He’s my cousin.
I don’t think it is a good idea, ________ ? A. isn’t it B. is it C. do we
Trees can stop the sand _____ towards the rich farmland in the south.
【改编】Not only his parents but also he very friendly to me.
—We’ll make a trip to Hainan Island next weekend. Will you go with us?—No, I can’t _____ it at present because I have little money.
Science is _____ difficult for some students ____ learn, so many of them don’t like it.