Experts warn that medical waste from hospitals, if properly, may contribute to spreading diseases.
I really appreciate ____ to help me with my maths, but I’m afraid that I have no time this week.
_____ all my teachers, Mr. Moore is the one who impresses me most.
Unfortunately, ____ stone hit him on ______ head and he got injured.
Though he doesn’t achieve his goals, he is not a failure. ____, he is remembered as a true hero.
– I was going to the concert with you his weekend, but I can’t now. -- ______.