99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

判斷題

The engineer hasn’t got time to track down the problem.‘To track down’ means to find out.

答案：正確

你可能感興趣的試題

That is the existing product range. "product range" means product portfolio.

答案：正確

If you are stuck, change to a new point.‘To be stuck’means to be sure of something.

答案：錯誤

<pre id="weoxj"><strong id="weoxj"></strong></pre>