97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

<source id="4lsuy"></source>

<pre id="4lsuy"><strong id="4lsuy"></strong></pre>

<ruby id="4lsuy"><output id="4lsuy"></output></ruby>

單項選擇題

As there was a power failure in the hospital, the doctor had to （）operation.

A.call for
B.call off
C.call on
D.cal lout

你可能感興趣的試題

單項選擇題

Television keeps us informed about （）events and the latest developments in politics and science.

A.current
B.past
C.favorable
D.new

單項選擇題

Such problem （）air, water, and noise pollutions are becoming more and more serious in some big cities.

A.like
B.as
C.of
D.about