Question

If you ________ to take this attitude，we’ll have to ask you to leave．

1. A.
   insist
2. B.
   keep
3. C.
   choose
4. D.
   stick

Answer 1

C
解析：
insist on/keep(on)后接doing；
stick to中的to是介词；
choose to do意为“偏要做某事”。