She is a bit shy and _______ stand up and answer the teacher’s questions.

“How __ he ___ that?” all of them shouted

We should protect our environment from being polluted ________ our next generation will enjoy a blue sky and live a healthy life.

Modern China is experiencing a completely new period_____respect for science and creativity has become the guiding principle of society．

ber 18, 1937 is a day _______ all Chinese willremember forever.