1．Suddenly the man __________（意识到）what was happening.
2．What's your __________（秘诀）of becoming a good swimmer?
3．This program has a bad __________（影响）on teenagers.
4．The more careful we are, the fewer __________（错误）we'll make.
5．My sister has trouble __________ (look) after herself .
6．The boy is so shy that he's afraid __________ (speak) in public.
7．With the __________ (develop) of the city, the environment is better and better.
8．The price of your gift is __________ (important). What your friend needs is true friendship.
9．你应该学会了怎么样独自处理学习上的问题了。
You should learn ______ ______ _______ _______ study problems alone.
10．除非你先给她打个电话，否则她不会参加这个聚会。（两种答案）
_______ you call her first, she _______ go to the party.
_______ you _______ _______her first, she won't go to the party
11．我把宠物狗看成一个家庭成员。
I _______ the pet dog _______ a _______ _______.
