___________ David showed the report to the public surprised me.A What B. That C. Which D. Who
——My family usually go hiking for vacation. I like hiking, but I want to try something different this year. —— ____________
Try to be more careful next time. Carelessness only________ mistakes.
. ——I wonder where Peter is. He said he’d be here for lunch. ——Don’t worry! He _____ be caught in the rush hour.
We shouldn't complain about being poor; many families are even ______.
The most serious problem we are facing now is how to ______ all the pollution.