We’re doing a lot to protect ourenvironment, but it is not good enough. —Sowe should try______ to look after it.

You are wearing a blue dress．How beautiful it is!—_____________________

The school principal himself ________ a prize in English to the best student at the opening ceremony

It was with great joy thecouple found their missing son after 18 years.

Mr. Green is very happy because he is satisfied with his students’ work today.