If ____unsolved, the problem of food safety may lead to more serious results.
| A．left | B．making | C．remained | D．taking |
The digital dictionary I hadthe other day cost me a lot.
| A．repaired | B．repairing | C．to repair | D．to be repaired |
Fortunately, rescuers were able to gainto the disaster-hit area soon enough.
| A．access | B．track | C．means | D．passage |
—How did you find your trip to Europe?
—in my life had I felt so great. The food and the service were satisfactory.
| A．Few | B．Only | C．Never | D．None |
I can’t understandit is that makes him so difficult at school.
| A．how | B．what | C．why | D．which |
What is the best way you can imaginethe overuse of water in our school?
| A．reducing | B．to reduce | C．reduced | D．reduce |