_it comes to traffic rules,I often come across such cases ________the local drivers obviously know thembut won’t follow them

When it______air pollution, Beijing faces the three “C” s—–cars，coal and construction，which lead to Beijing’s thick air pollution.

Having　decided　to　rent　a　flat，we＿＿contacting　all　the　accommodation　agencies　in　the　city。

Though great efforts have been ___ on their study , Annie still can’t make any improvements , whichmakes her parents greatly ______ . [ ]

(2013·开封高三第一次模考)—Did Ann fail in English?—She ________.Don’t you notice that she looks depressed?