It is hard to imagine what life __________ in 100 years.
On ______ sides of the streets are a lot of colorful flowers.
Excuse me! You can’t take photos here.Look at the sign. It says “NO PHOTOS”.— Sorry,I _________ see it and I _______ do it.
The plane from Beijing to Hong Kong ________ half an hour ago.
What do you think of ____________ 2013Asian Youth Games? – I should say it was ________ success.