1、  Have you considered ________ our son a big gift since he won the race?

2、  Last month, many trees _________ along the streets to make our city more beautiful.

3、 -How ________ do you visit your parents? -About three times a year.

4、  属于阴中之阴的时间是（ ）

5、  -Would you mind if I open the window for a better view?

6、 My brother ________ hard and succeeded at last.

7、 They lost their way in the forest and ________ made matters worse was that the night began to fall.

8、 -Would you like a bottle of mineral water? -________

9、  You'd better ________ your homework before dusk.

10、  She has a brother and a sister, _________ she?

11、  I am looking forward to _________ your answer as soon as possible.

12、  She and her sisters _________ good at singing songs.

13、  It is going to rain.

14、  He drives much ________ than he did ten years ago.

15、  —What is _________ most useful invention in the 20th century?