—Was it in 1969 the American astronaut succeeded landing on the moon ?—Yes , that’s right .
—Don't you think the equipment is worth buying?—Worth buying?I don't think there is________the one we saw in the advertisement.
—Well,the chief is not ready to make a decision yet.—So,________,we have to wait,right?
The art show was________being a failure;it was a great success.
One of the most important problems they had to consider was________of public health.
After the amateur singer competed in the program The Voice of China, his singing career .