.—____ when has the country been open to international trade? —1978, I suppose.A
题型：不详难度：来源：
.—____ when has the country been open to international trade?
—1978, I suppose. |
答案
| A |
解析
| since意为“自从”，常与现在完成时连用，表示动作从某个时候开始，一直延续到现在。根据特殊疑问句中的时态可判断要用since。since when表示“从什么时候”。in 意为“(表示时间)在……之内，在……之后”。from用于表示时间，意为“从，自”。after表示时间，意为“在……以后”。 |
举一反三
Some students often listen to music _____ classes to refresh themselves.| A．between | B．among | C．over | D．during |
|
| A great man shows his greatness _____ the way he treats little man. |
| I like Mr. Miner’s speech; it was clear and ______ the point. |
| He is doing a hard job.Work starts at 7 a.m.every day and goes on until late afternoon only a break at midday. |
| In our factory there are 20 workers applying the post. |
最新试题
热门考点