I spent five hours repairing the car. The work was ____ simple.
“One blue represents the economy growing. The other blue is the blue sky. That means we have to ______ development and environmental protection,” Wang Zhongbing said.
Daily practice is a good ______ in learning English. If you keep trying, you will be sure to make greater progress.
Most of us believe that there should be a(n) ______ of mutual(相互的) trust and respect between teachers and students in teaching.
The robbers searched all the boxes in the house, hoping to __________more valuables
If something comes flying toward your face, your __________ will be to pull back.