We can never expect _____ bluer sky unless we create _____ less polluted world.
| A．a, a | B．a, the | C．the, a | D．the, the |
I would rather you _____ with us yesterday, but you left.
| A．had stayed | B．stay | C．stayed | D．have stayed |
He was an _____ poet at that time and his _____ poems spread through all the country.
| A．inspired; inspired | B．inspiring; inspired |
| C．inspired; inspiring | D．inspiring; inspiring |
He is the only one of the students who _____ a winner of scholarship for three years.
| A．is | B．are | C．have been | D．has been |
_____ was most important to her, she told me, was her family.
| A．It | B．This | C．What | D．As |
—Why do you suggest we buy a new machine?
—Because the old one has been damaged ______.
| A．to repair | B．beyond repair | C．in repair | D．under repair |