Though a typhoon is on the way, people are still looking forward ________ the outdoor concert by the pop singer.
A：to canceling
B：not to canceling
C：not to cancel
D：to not canceling
下列加横线字注音完全正确的一项是（ ）
已知a2mbn+6和3a3n﹣3b2m+n是同类项，则mn=____
—Is your headache getting _____________?
—No, it's worse.
