--How much ________ this pair of trousers? - Ten dollars _______ enough.
| A．are, is | B．is, are | C．are, are | D．is, is |
In their efforts to persuade us to buy that product, shopkeepers have made a close study of human nature and have_______ all our little weaknesses.
| A．divided | B．arranged | C．classified | D．separated |
From facts, scientists have_______ that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.
| A．confirmed | B．concluded | C．concentrated | D．centered |
______ to the right at the end of this road, you will find the restaurant right there around the corner.
| A．Your turn | B．Turn | C．If turn | D．Turning |
_____, we’ll go camping this weekend.
| A．Weather permitting | B．If weather is permitted |
| C．Weather permits | D．Weather permitted |
When we finally ______ to get all the work done, we were so exhausted that we simply felt like lying down and having a good sleep.
| A．tried | B．managed | C．succeeded | D．attempted |