The world today _____ different without the amazing discoveries produced by great scientists.
| A．were | B．had been | C．would be | D．would have been |
—Which is the computer you want to _____?
—The one over there.
| A．have repaired | B．have it repaired |
| C．have repair | D．repair it |
Don’t start reading a book _____ you find that it’s one you can read with ease and understanding.
| A．when | B．if | C．unless | D．Though |
Someone _____ his car in front of my house and it’s blocking my way.
| A．has parked | B．parked | C．was parking | D．had parked |
In the Rose Park, lakes will be built and roses _____ in place, making it the most beautiful in the city.
| A．put | B．putting | C．to put | D．being put |
You _____ an A on your composition, but there were some spelling mistakes.
| A．should receive | B．could have received |
| C．would receive | D．must have received |