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

<xmp id="dwuud"></xmp>

單項(xiàng)選擇題

Great changes （） in China since 1978.

A.take the place
B.took the place of
C.have taken place
D.have been taken place

你可能感興趣的試題

單項(xiàng)選擇題

Electricity （） by the Greeks a good many years ago.

A.was first found
B.was first discovered
C.has first been discovered
D.was seen first

單項(xiàng)選擇題

Before she left on the trip, she（） hard.

A.trained
B.has trained
C.would trained
D.had trained