With a lot of difficult problems________，the newlyelected president is having a hard time.[ ]

If you are _______ about Australian cities, just read the book by Dr. Johnson, which introduces them in detail.

A direct order like “Daisy, pass me the book’’ sounds rude. We’d better say “_______”

They are discussing what to do for the disabled.— ___________is necessary to provide them with more positions.

What’s the matter with Tim——Oh, Tim’s cell phone was left in ataxi accidentally, never ________ again.