¡¡¡¡( )21. --- I’m too busy _______ to my family.

¡¡¡¡--- Why not call them instead?

¡¡¡¡A. writing B. to write C. written D. write

¡¡¡¡( )22. The little boy woke up his father, _______ “Happy Birthday!”

¡¡¡¡A. call B. to call C. called D. calling

¡¡¡¡( )23. The car _______ in Germany in the 1960s looks old now.

¡¡¡¡A. produced B. producing

¡¡¡¡C. to produce D. which produced

¡¡¡¡( )24. --- What are on show in the museum?

¡¡¡¡--- Some pictures _______ by the Africans.

¡¡¡¡A. drawing B. drawn C. drew D. were drawn

¡¡¡¡( )25. The sick man stayed in bed, _______ very terrible.

¡¡¡¡A. felt B. feeling

¡¡¡¡C. is feeling D. was feeling

¡¡¡¡( )26. --- The boy was seen _______ his bike a moment ago.

¡¡¡¡--- I am sorry to hear that.

¡¡¡¡A. fell off B. to fall off

¡¡¡¡C. fall off D. to fall down

¡¡¡¡( )27. There’re so many beautiful presents in the shop that I don’t know _______.

¡¡¡¡A. to choose which one B. what choose

¡¡¡¡C. which one to choose D. to choose what

¡¡¡¡( )28. --- How bad! They still have no ideas how _______ the problem.

¡¡¡¡--- Let’s go to help them.

¡¡¡¡A. solving B. solved C. to solve D. solves

¡¡¡¡( )29. What is the best way do you think ______ the wild animals?

¡¡¡¡A. protecting B. to protecting

¡¡¡¡C. protected D. to protect

¡¡¡¡( )30. --- You’d better have your sports jacket _____. It’s too dirty.

¡¡¡¡--- Thanks. I will.

¡¡¡¡A. to wash B. washed C. washing D. wash