----Do you find this Maths problem__________?---Yes. I can work it out_______.

I usually get home late because there is ______ traffic on the road.　　  

Reading in the sun is ______ to your eyes.

 Why do English people talk so often about the weather when they start a talk? — Because the weather is a(n) ________ topic (话题).

That bag is too ________, who can help me carry it?