Ⅰ.单句语法填空
1．She and I both arrived at the same time by coincidence.
2．Children are always curious about everything they see and hear.
3．Fortunately (fortunate)，when he went abroad to try his fortune he gained great wealth.
4．Upon seeing(see)the toys，the little girl jumped with joy.
5．Do you believe that there's a connection (connect) between smoking and heart disease?
6．Almost every teenager will experience a period in their life when they aren't content with their parents.
7．It's generally believed that his cancer resulted from the overfull tiredness.
8．Disturbing news came that the disease spread quickly, which made us rather disturbed．(disturb)
9．Upon returning (return)to the car I realized I had locked my keys in the room!
10．Well preserved (preserve)in the nature reserve，pandas live a happy life.
