—You seem to know much about the city.
—That’s true. I it four times in the last three years.
| A．visited | B．visiting |
| C．have visited | D．will visit |
I like reading in the city library ________ I often lose myself in a world of good books on weekends.
| A．which | B．that |
| C．/ | D．where |
—May I come in? I’m sorry I’m late.
— Come in, please. But could you please tell me _______________?
| A．why you are late again | B．what were you doing then |
| C．who you talked with | D．how do you come to school |
—_________ nice trip to travel by air!
—__________.
| A．How a; So it is. | B．What a; So it is. |
| C．How ; So is it. | D．What ; So is it. |
______ twenty minutes enough for you to get to the station?
| A．Are | B．Do |
| C．Is | D．Does |
In the past few years there ________ great changes in my hometown.
| A．has been | B．have been |
| C．have had | D．were |