Shall we go and ______ hello to the old man?—Good idea! Let’s go.
The following chapters provide step-by-step instructions for practical _______ of genetic (基因)engineering to agriculture.
What’s the weather _________ in Beijing?——It’s terrible in summer, too cold and humid.
Mum, _________ my friend Jane.
We’ll go for a walk if it ___ __ tomorrow.
