---It’s the second time that I ___ to Shanghai.
---What great changes! It’s ten years since I _____ it last time.
| A．have been, left | B．had been, left | C．am, had left | D．come, had left |
Although she did not know Boston well，she made her way __________ to the Home Circle Building.
| A．easy enough | B．enough easy |
| C．easily enough | D．enough easily |
Jane has lost weight by going on __________ diet and taking __________ exercise every day.
| A．a；an | B．a；/ | C．/；/ | D．/；an |
It was not until I came here ________ I realized this place was famous for not only its beauty but also its weather.
| A．who | B．that | C．where | D．before |
We observed some young men __________into the building at 11：00 last night.
| A．to slip | B．slipped |
| C．slipping | D．being slipped |
Hangzhou is __________beautiful city，and it is worth__________.
| A．a most；visiting | B．the most；to visit |
| C．a most；to visit | D．the most；visiting |