Please do not feed the fish; they ________ die if they eat too much.

(2013·江西六所重点高中一模)We ________ take clean drinking water for granted. One day we may run out of it.

— _    good time we had at the party last night!— Yes. It was _____ exciting party that I would never forget it.

 —Is the woman over there Miss White? —It ______ be her. She’s gone to Hangzhou.

All of us must do_______ to help protect the environment，or we will have more hazy weather雾霾天气.