【正文】
aving finished 4. I am interested in this book, not the others. →________is this book ________ I am interested in. 答案 It。 that 5. I think it is difficult to learn to play the piano well. →I think ________ ________ to learn to play the piano well. 答案 it difficult Ⅱ. 單句語法填空 (不多于 3個單詞 ) 1. This mobile phone is very expensive. I can39。t afford ________ (buy) it. 答案與解析 to buy afford (to do) sth. “ 能抽得出時間 /有精力或能力 /花得起錢做某事 ” 。 2. Students can sometimes mix study ________ pleasure.