When I don’t know how to _____ something, Mr Wu is always the first person that I _____advice.

Even if these chemicals are still in experimental stages, they _____ to be a number one hit.

I’m not a little tired today after giving the room a thorough cleaning and I have never had ______ today.[ ]

No one________ be more generous；he has a heart of gold.

Did you know more about the mine accident?— Oh, sorry, I had no idea.I ________the Rescue Center now[ ]