You reada book in the sun—it’ll do harm to your eyes

The child tiptoed quietly to the bird ______ into theforest when he was about to catch it

trying to carry out the plan, but I failed.—Well, you _____, for we were uncertain it would do____.

Ouch! You hurt me. —I’m sorry. But I _____ any harm. I _____ todrive a rat out.

The traffic problems have severely affected economic development ________ we must spare no efforts to solve them[ ]