Mothers holding jobs outside the home should have ________ schedules to make it easier to care for their children.
| A．frequent | B．fluent | C．flexible | D．smooth |
If you plant watermelon seeds in the spring, youfresh watermelon in the fall.
| A． | eat | B． | would eat | C． | have eaten | D． | will be eating |
Playing on a frozen sports field sounds like a lot of fun. Isn't it rather risky,？
| A． | though | B． | also | C． | either | D． | too |
-- According to my grandma, it is a good idea to eat chicken soup when you have a cold.
-- __ , scientists agree with her.
| A．Sooner or later | B． Once in a while |
C．To be exact | D．Believe it or not |
"Youhave a wrong number," she said. "There's no one of that name here. "
| A． | need | B． | can | C． | must | D． | would |
For many years, people __ electric ears. However, making them has been more difficult than predicted.
| A．had dreamed of | B．have dreamed of | C．dreamed of | D．dream of |