Some of the plastic bags can’t ______ after June1.— Yes, people will use environmental bags instead.

Facing the emergence, we were at a loss and none of us could ______ a solution to the problem.

It’s8 o’clock. My mother is reading a book. My sister and I _____.

Who is knocking at the door?— _______.[ ]

Willyou be ____ this in by my boss.