It ______ the workers about 20 months to build the Huhang highspeed railway.
We can't make a sandwich without ?
When is the World Book and Copyright Day(世界读书日)?It's____23 April.
Good news! We'll have one-day holiday in order to celebrate the 70thanniversary(纪念日)of the victory in World War II.
— Can you tell me ________?— His home is quite far from the office, I think.
We will go to Tian’anmen Square to watch the raising of national flag if it ________ tomorrow.