10．We can easily become unhappy _________ (除非)we can deal with our problems．

9．It's _________ (危险)to cross roads when the traffic lights are red．

8．Jackson was __________ (采访)by his friend yesterday．

7．Everyone knows the __________ (重要性)of learning English．

6．The pen isn't mine，but I can't find the ________ (物主)．

5．He kept unhappy last week because his little brother d___ his walkman on the floor and broke it．

4．The teacher often r_____　 the boy as his own child．

3．Taiwan b____________ to China forever．

2．I'm not good at English．My P___ is poor．