“Life is like walking in the snow，”Granny used to say，“because every step ________.”(2012·新课标全国)

Brain who serves as manager of the company hopes that everything will be better when he quits than when he_______.

I fixed my eyes upon the newcomer, wondering whether I ________ him somewhere before．

 Jane was disappointed that most of the guests     when she       at the party.

 Peter has gone to Beijing, but I’m wondering why he ________ in such a hurry.