The researchers found clear and convincing evidence _________ happiness is the key when it comes to better health and longer lives.
| A．where |
| B．whether |
| C．how |
| D．that |
The sentence doesn’t make any , no matter how you read it.
| A．contribution | B．room | C．sense | D．use |
We need to spend more time researching these suggestions so that we can make a(n)choice.
| A．known | B．talented | C．advised | D．informed |
The only drawback of the voyage was the ______ sea, which made me very seasick.
| A．calm | B．rough | C．patient | D．tough |
At the end of the year 2010, some species of birds ddn’t survive the _____ winter in some European countries.
| A．severe | B．serious | C．mild | D．extreme |
—Hi, I hear you’re going to London this summer vacation.
—, I was going to, but now I have changed my plan.
| A．Previously | B．Recently | C．Absolutely | D．Partly |