I ate__________ sandwich while I was waiting for _______ 20:08 train.

Nowadays, many people walk to work ________ Copenhagen Conference calling for living a low-carbon lifestyle to cope with global warming.

I won’t be able to understand what you say ______you speak too quickly.

Jim has his wife do all the housework!Isn’t he wise— Not really He is _______

Li Lei can ___ Chinese kung fu.