Lucy is very shy and never speaks _________. A until speaking B. unless spoken to C. unless speaking to D. only if spoken to
. .More than 60 million people in southwestern China ________the drought nowadays as a result of less rainfall, environmental damage and so on
. Please don’t do anything harmful ________ our nature, or we humans will have no ________ each other.
. .What you said just now ________me of that American professor.
. .--- Must I go there right now? --- No, you_________.
. My younger cousin is now on ______ diet. She is trying to lose ________weight.