評論
打印
1. _______________ （隨著工商業(yè)的發(fā)展）,the number of trees in many big cities has dramatically reduced.
2. Travel can widen our knowledge, _____________ （擴(kuò)大我們的眼界）,and make one open-minded as well.
3. Cars are responsible for most of the smog in cities, _______________ （這已經(jīng)對環(huán)境造成了嚴(yán)重的污染）.
4.Modernization will be entirely possible in the first half of the 21st century, as long as we ________________（堅持認(rèn)為）that economic development is the center of all our work.
5. He was convinced on the basis of ____________（當(dāng)時已出現(xiàn)的情況）that there would be a long and difficult struggle.
