There is clear evidence _____ smoking does harm to our health.
| A．where | B．what | C．which | D．that |
—This wall of air is an effective answer to the problem and it ______ work.
—But it is a question to put such a wall of air around the statue.
| A．may | B．must | C．should | D．could |
—How do you think I should receive the reporter?
—______ you feel about him, try to be polite.
| A．How | B．What | C．Whatever | D．However |
Examination compositions, together with most business letters and government reports, are the main situations ______ formal language is used.
| A．in which | B．on which | C．of which | D．for which |
—Who is making so much noise in the garden?
—______ the children.
| A．There are | B．They are | C．That is | D．It is |
I haven’t read ______ of his books, but judging from the one I have read I think he’s a very promising writer.
| A．any | B．none | C．both | D．either |