Having lived in China for 8 years, Helen has a good ______ of both English and Chinese.
.We won’t give up _____ we should fail ten times.
.---May I go with my friends to the harvest festival ? --- _______
.Do you often shop in our store? How much do you ______ spend every time?
.---Will you give up the plan?---No. No matter what result is, I’ll still ______ to do it.
.We will learn how to operate the machine _______.