—I bought this shirt for 35 yuan yesterday. —It’s on sale today for only 29. You should have waited. —Oh, really? But how ________ I know?
Do you know ______ tomorrow?
Mary is being punished by the teacher. That is _______ she broke the school rules.
By improving reading skills, you can read faster and understand more of ______ you read.
----That is ________ you spent your summer holiday, isn’t it? ---- That’s right.
Human beings are different from animals _________ they have languages.