Though a typhoon is on the way people are still looking forward the outdoor concert by

问题补充：

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

答案：

A. to canceling

B. not to canceling

C. not to cancel

D. to not canceling

解析：考查非谓语动词。look forward to中的to为介词，因此后面要用动词的现在分词形式；分词的否定式是在分词前面直接加not。