21.European football is played in 80 countries， it the most popular sport in the world.
A.making B.makes C.made D.to make
选A
22.The man managed to make himself with his English .
A.understand，breaking B.understand，broken C.understand，breaking D.understood，broken
选D
23. from the moon，our earth with water ____70%of its surface appears as a “blue ball ”.
A.seen，covered B.seeing，covered C.seen，covering D.to see，to cover
选C
24. any more to say，the meeting was closed.
A.without having B.without C.not having D.nobody having
选D
25.When we watched the national flag on TV，we a cheer.
A.risen，rose B.being risen，lifted C.raised，let D.being raised，raised
选D
26.Being in a hurry，_______ .
A.the door was left open B.he left the door open C.he was left the door open D.he had the door open
选B
27.The professor came into the lab， by his assistant.
A.following B.followed C.being followed D.to follow
选B
28.With trees，flowers and grass ____everywhere，my native town has taken on a new look.
A.planting B.planted C.to plant D.to be planted
选B
29.Weather ，we'll go fishing tomorrow.
A.is permitted B.permits C.permitted D.permitting
选D
30.The key ，I couldn't enter the office.
A.was lost B.having been lost C.be lost D.being lost
选B