“How do you deal with the disagreement between the company and the customers?” “The key ______ the problem is to meet the demand ______ by the customers.”
--- Jack, did you happen to see ____ black and ____ white cat?--- Is she missing? I told you to take care of her.
--- Who__________ it be that is knocking at the door? --- It ____________ be Father, but I’m not sure.
It is the test system, _________ the teachers, that is to blame for the heavy burden of middle school students nowadays in China.
The last letter ____ arrived yesterday morning left him______ very sad.
.The opening ceremony of the 29th Beijing Olympic Games was __________ that everybody was greatly impressed_____ it.