Whether ways will be found to stop pollution or not is just _______ worries the public．
| A．why | B．which | C．that | D．what |
My father is knowledgeable. Whenever we plan our vocation, he always offers_______ suggestions.
| A．practical | B．stable |
| C．innocent | D．bearable |
He was told that it would be at least three years ____ he could recover and return to work.
| A．when | B．before |
| C．since | D．that |
He is a person exact in time and very careful, and he never _______ any little items.
| A．notices | B．deletes |
| C．undertakes | D．overlooks |
--- How do you know he is from Scotland?
--- Well, his special accent _________ when he spoke.
| A．appeared | B．showed |
| C．betrayed | D．displayed |
As party members, we should always _________ the interests of the people in mind.
| A．place | B．bear |
| C．show | D．drop |