1—Do you have a knife—Yes, I do. I have a big .

Has your father returned from Africa yet?—Yes,but he _______ here for only three days before his company sent him to Australia

limbing is a breathtaking activity, very popularnationwide among young people, ______ cooperation as well as courage plays animportant role.

After the new technique was introduced the factory produced cars in 1994 as the year before.

I don’t know if Mr. Li ____ to the partythis evening.- I think he will come if he ____ free.