I could just see a car in the distance, but I couldn't _____ what color it was.
| A．look out | B．make out | C．get across | D．take after |
It is generally considered that air pollution is ______ danger to ______ nature.
| A．/; a | B．/; the | C．/; / | D．a; / |
---Hey Julie, do you know a good dentist in this town?
--- ______, but last time, my father took my brother to the Goliath.
| A．Not exactly | B．Certainly not |
| C．Yes, of course | D．What a pity |
Christina stood near the window, ______ she could see the amazing scenery.
| A．where | B．which |
| C．from which | D．from where |
This printer is of good quality. If it ______ break down within the first year, we would repair it at our expense.
| A．would | B．should | C．could | D．might |
---What a mistake!
---Yes. I ______ his doing it another way, but without success.
| A．was suggesting | B．will suggest |
| C．would suggest | D．had suggested |