无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<pre id="57eg0"><acronym id="57eg0"></acronym></pre>

單項選擇題

No discount will be granted（）you place an order for more than 1000 dozen.

A.if
B.unless
C.whether
D.butfor

你可能感興趣的試題

單項選擇題

When yon（）an agent, it is usual to（）the appointment in writing.

A．a(chǎn)ppoint，make
B．want，make
C．need，make
D．need，do

單項選擇題

For（）commodities as oil, sand and timber, rail is cheaper than road.

A.unpacked
B.unpackaged
C.bulk
D.bundled

<ruby id="lo7gc"></ruby>