(2013·四川省泸州市4月模拟)This is neither the time nor the place to play.Let’s________and attend to the business in hand.

Smoking, ____ some smokers, might ease their anxiety sometimes, but ____ the addiction caused by their constant practice, it is really hard to give up.

When you rewrite the paragraph, I advised you to _______ the last sentence as it is rather mileading.

To save the drowning child, the boy plunged into the icy water without hesitation, ____ his own safety.

Although the necklace is not made of real crystal, the shape and its size still         most young people to buy it.