I was about to give up my effort to solve a problem __________ a good idea struck me

There a dolphin show in the zoo tomorrow . -Great ! Let’s go to see it together.

Bill, can I use your dictionary I left mine at home.—Of course you________. Glad to help you.

n a bigger _______internationally, many companies are striving to make their products morecompetitive

opinion,life in the twenty-firstcentury is much easier than _______.