Something unusual _______(happen) to you if you _______(not be) carefull.

Something unusual _______(happen) to you if you _______(not be) carefull.
Something unusual _______(happen) to you if you _______(not be) carefull.

Something unusual _______(happen) to you if you _______(not be) carefull.
will happen don't be
如果人不认真,那一些不平常的事情将发生在你身上.

第一个空：will happen
第二个空：are not