—The exam was easy, wasn’t it?—Yes, but I don’t think ______ could pass it.
________ several times,but he still doesn't know how to do it correctly.
Information technology is taught in most schools,________ we have entered the information era.
It's really very dangerous.One more step,________ the baby will fall into the well.
There is still much to discuss;________,we shall return to this topic at the next meeting.
Knowledge is the food of thought ________,as long as it is put in our brain,we will grow wiser.