If coastal erosion continues to take place at the present rate, in another fifty years this beach________ any more.
A. doesn't exist
Chọn đáp án B
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The Red River________ very fast today-much faster than yesterday.
In the last two decades, space exploration___great contributions to weather forecasting.
I________ "Chicken soup for the soul" but I haven’t finished it yet.
On July 20, 1969, Neil Armstrong ________ down onto the moon, the first person ever set foot on another planet.
When boarding the plane, many passengers were annoyed because they ________ waiting in the airport for three ad a half hours.
The phone________ constantly since Jack won the first prize this morning.