Try on this red skirt, you will look great _____ it[ ]

In only 20 years,the country has into an advanced industrial power. [ ]

The old worker insisted that he________ old, and________ back to the working post again.

mes smiles around the world ______ be false,hiding other feelings like anger, fear or worry

I’m always ________ about what I say because careless remarks are likely to hurt others’ feelings.