I think it’s going to be a big problem. — Yes, it could be. — I wonder _____ we can do. [ ]

Let’ t go for a walk . — That sounds good .

____ are Lucy and Lily talking to—Their English teacher.

.They served raw vegetables with the hamburgers and boiled the potatoes ________ fried them.

s economic development has made______ rapid progress in the past 10 years, and young people have made ______great contribution to this progress.