I found it ________to work out the problem. You needn’t go to the teacher.

I like swimming，while what my brother enjoys ______

If you _____ the bottle and cigarettes, you we’ll be much healthier.

Joseph ________ to evening classes since last month, but he still can’t say “What’s your name?” in Russian.[ ]

It’s said that scientists are working hard to________ a way to deal with H7N9 avian influenza(H7N9禽流感)—Really That’s great!