The phrase "has been making efforts" is correct and usable in written English.
This phrase is used to express that someone has been working hard to achieve something. For example: "The company has been making efforts to reduce carbon emissions."
Our leader has been making efforts to heal the disconnection.
Google did not respond to inquiries about these developments on Sunday, but the company has been making efforts to help locate him.
For more than a year, according to classified intelligence reports, Al Qaeda's affiliate in Yemen has been making efforts to acquire large quantities of castor beans, which are required to produce ricin, a white, powdery toxin that is so deadly that just a speck can kill if it is inhaled or reaches the bloodstream.
Konami has been making efforts outside of the game to make it something the casual player will want to get involved with, but the past few years have seen very clear attempts to draw in even more South American players – a region in which PES still reigns supreme.
The company has been making efforts to combat this.
Though goTenna is a hardware startup at heart, it has been making efforts to diversify its revenue stream.
Once the diagnosis of encephalopathy has been made, efforts are made to exclude underlying causes (such as listed above in "causes").
Ms. Dutkova said Slovakia had been making efforts to tighten security at the Ukraine border.
We have been making efforts to contact these people, so far without success".
"We have been making efforts to clean it up," said Mr. Stern.
We have been making efforts to stockpile supplies to get us through the most intense months of the rainy season with the risk of waterborne diseases and malaria".
