is known to us all that the old scientist,for life is hard in the past,still works hard in his eighties.
—I'll miss you,dear. —It ________ long before we meet again,Mom. It's only one month away from Christmas.
This factory is closing up,so lots of workers will be ________.
—Can I ask you a few straightforward questions about yourself? —No problem. I like ________ when people are open and direct.
If we expect ________ much cleaner world, we should attract ________ world's attention to protect it.
— Mom,Dad is smoking again! —Well,let him cut it ________ gradually since old habits die hard.