问题
I often doubt ________.
A:that this song is worth listening to
B:if this song is worth listening
C:that this song is worth listening
D:if this song is worth listening to;
B:if this song is worth listening
C:that this song is worth listening
D:if this song is worth listening to;
正确答案是：
同类题型
Are Jim and Bob playing outside—-_______.They are doing their homework in thestudy.
The technology of electronic products is ________changing, so you needn’t follow the fashion
About _______ of the workers in the factory were born in ______.
I prefer _____with a pen rather than _____on the computer, because I type so slowly.[ ]