— Do you think yesterday’s math problem was difficult?— Yes. I could           work it out.

The number of giant pandas is getting _________ because their living areas are becom­ing farmlands.

—Lily dances so well . Where was she trained?—She learns all by herself .She _______goes to any training class.

In the exam, the_________you are, the_________mistakes you’ll make. 

My computer began to return to the ______ running state after I killed the virus by newly-updated Kaspersky.