The Eiffel Tower __________ for the 1889 Paris Expo. It is a symbol of the city now.
I _______ be afraid to sleep alone in my room, but now I _______ sleeping there alone.
He _____ for two years. We are still sad about his ______.
I _______ to Beihai Park if I _______ time next weekend.
–Are you going to Shanghai by bus? --I am not sure. It’s cheap, but uncomfortable. I _____ take a train.
The students of our class _____ to swim last month and we can swim very well now.