Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?
When is April Fool’s Day?
There are _______ in the reading room, but many of those books aren’t _______ to read.
The passengers’ (乘客) families were to keep calm as soon as they heard the bad news.
Do you know the girl is drawing the pictures under the tree?—Yes . She is my new classmate.