今天的英文文法談的是考完成式及主、被動式的用法，英銘老師要花短短十分鐘跟你講清楚說明白喔，只要每天follow英銘老師國考英文周刊，就可以每天累積英文的功力囉！
( ) I have been doing research on pollution. I have _____ that we are running out of places to put our garbage.
(A) finding out (B) found out (C) been found out (D) been found
這題是考完成式及主、被動式的用法：
完成式：S + have / has + p.p.…
根據句義：我發現沒有地方可以放置垃圾，這是主動式的用法，所以答案是(B)。
補充：
research v. n. 研究 (always)
Research shows that many young people are obsessed with fashion.
研究表示，許多青年人沉迷於時尚。
run out of 從…跑出、用完 (always)
On hearing the alarm, people all ran out of the building.
一聽到警報響起，大家都跑出了大樓。
Noah has run out of all his money.
Noah把所有的錢花光了。