________ the two designs, and you will find what problem there is with yours.
| A．Comparing | B．Compared | C．To compare | D．Compare |
—Ye Shiwen got the championship in the women's 400 meter individual medley at London Olympics.
—She fully deserves the title. She ________ for it for years.
| A．is preparing | B．was preparing |
| C．has prepared | D．had been preparing |
Your headmaster would have been happy to give you two days off, if you had gone and explained that your parents ________ ill at the time.
| A．were | B．had been |
| C．are | D．would be |
If we don't hurry up, everything ________ by the time we get to the party.
| A．will be eaten | B．is eaten |
| C．has been eaten | D．will have been eaten |
The vegetables in his field ________ well, because they are pollutionfree.
| A．are selling | B．have been sold |
| C．are sold | D．sell |
—What's the matter with Philips?
—Something must have happened to him. He left home three hours ago, but ________ at the party!
| A．didn't arrive | B．isn't arriving |
| C．hadn't arrived | D．hasn't arrived |