He is very popular among his students as he always tries to make them __________ in his lectures.
| A．interested | B．interesting |
| C．interest | D．to interest |
—How long are you staying there?
— _____depends.
| A．It | B．Anything | C．This | D．Everything |
______was known to them all that William had broken his promise______ he would give each of them a gift.
| A．As, which | B．What, that | C．It , that | D．It , which |
—When can we come to visit you?
—Anytime you feel like .
| A．one | B．it | C．so | D．that |
—He got his first book published. It turned out to be a bestseller.
—When was _____?
—_____ was in 2000 when he was still in college.
| A．that; This | B．this; It | C．it; This | D．that; It |
He didn’t make ________ clear when and where the meeting would be held. .
| A．this | B．that | C．it | D．these |