A：
B：
C：
D：
A sense of ________ is _____ it takes for a comedian to perform well in a comedy.
我国面积最大的省级行政区是
The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
如图，直线a，b相交于点O，若∠1等于40°，则∠2等于（ ）
，则
( )
