...ass, metal and paper; and more than two thirds (70%)
had tried to cut back on the use of
disposable packaging, such as plastic honey bottles, and butter and yoghurt
containers.句子摘自北师大高中英语必修第三册第8单元(p40)。请问 cut back 与 cut back
on 如何区别?上面句...
1.
Marty ______ (work) really hard on his book and he thinks he'll have
finished it by Friday.A. is working
B. has been working请问:此题如何选择答项,并解释。谢谢!2.
We have decided that the headmaster _____ (award) the prize to those
gifted students at the meeting tomorro...