Question

Though a typhoon is on the way,people are still looking forward ______ the outdoor concert by the pop singer.

1. A.
   to canceling
2. B.
   not to canceling
3. C.
   not to cancel
4. D.
   to not canceling

Answer 1

D
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。