20．An investigation into the cause of the crash will______________by the Department of Transport.

[答案]　be carried out

19．____________our records，the books you have borrowed should now be returned to the library.

[答案]　According to

18．Where is my schoolbag？Someone must have taken it away____________.

[答案]　by mistake

17．I am not interested in sports-I play badminton just____________.

[答案]　for fun

16．In a word，I__________your generous help to all of my family.

[答案]　am grateful for

15．If I were you，I wouldn’t________________their personal problems.

[答案]　be involved in

14．They worked day and night to________________the lost time.

[答案]　make out for

13．The boy was so excited that he____________the secret.

[答案]　gave away

12．We still haven’t____________how to do it.

[答案]　figured out

for fun；by mistake；nothing like；figure out；make up for；be involved in；according to；carry out；be grateful for；give away

11．Tom is my son，but he is____________me.

[答案]　nothing like