If he ______ it, he _______ it.
| A．had seen; could have believed | B．saw; couldn’t believe |
| C．saw; couldn’t have believed | D．has seen; had believed |
Chemical pollution will bring about a threat to agriculture and food chain, and ________ to human health.
| A．frequently | B．significantly | C．steadily | D．consequently |
—Jenny, I hate to say it, but you really must go!
—________.
| A．All right, if you insist | B．Not likely |
| C．Mind your own business | D．You must be kidding |
Mr. Smith doesn’t like all that empty talk between Susan and Joan, which he thinks will definitely get them ________.
| A．anywhere | B．anything | C．nowhere | D．nothing |
In spite of the fact that soccer is the most popular international sport, it isn’t what most girls ________.
| A．go in for | B．make up for | C．do away with | D．put up with |
Researchers have found clear and convincing evidence ________ happiness is
the key to better health and longer lives.
| A．where | B．whether | C．how | D．that |