I can't understand why he ________ so selfish. He isn't usually like that.

Allen has decided that he will be an engineer by the time he ________ twenty.

．The sweater   ________   easily; isn't it suitable for a person as lazy as you? 

 A recent survey shows the number of people who shop in stores ________， while far more are shopping online.

I won't buy this iPhone unless the price ________ to under 2,000 yuan. 

I ________ for Beijing next Saturday. Do you know when the earliest plane ________ on  Saturday?

Egg prices usually  ________       in spring when they are most plentiful.

This kind of ice cream      ________   like a combination of banana and strawberry.

—Do you love teaching, Miss He?—I fell in love with teaching in 2000. I ________ for twelve years by this summer.

 My parents ________ in Hong Kong. They were born there and have never lived anywhere else.

Your headmaster would have been happy to give you two days off, if you had gone and explained that your parents ________ ill at the time.

 The vegetables in his field ________ well, because they are pollution­free.

 If this product does not give you complete satisfaction, please return it to the manufacturer, stating when it ________.

 In general, most tennis ________ on hard courts or on clay.

Despite ongoing street protests, US beef ________ in South Korea due to its lower price.

—Car prices have been going down sharply in the last 20 years.—It's not surprising because the law of market ________ the price of a product.

 The habit is something that someone does repeatedly and often does not ________ because they have done it so many times before.

 As the road to the airport is under reconstruction, we'd better ________ early to avoid the traffic jam.

Why does your brother ________ a sad look on his face these days?

 It is quite often that the workers are always ________ by heat if they work outdoors for a long time in the hot summer afternoon.