I first met Lily five years ago. She ___ as a nurse in a hospital at the time.
| A．was working | B．has worked | C．had been working | D．had worked |
Not only I but also Jane and Mary ______tried of having one examination after another.
| A．am | B．be | C．are | D．is |
While watching television,______.
| A．the doorbell rang |
| B．the doorbell rings |
| C．we heard the doorbell rings |
| D．we heard the doorbell ring |
The hotel ______now beside the park was designed by a group of young men.
| A．to be built | B．built |
| C．being built | D．building |
---Tom studies very hard and is intelligent as well.
---______that he always gets the first place in all examinations.
| A．No way | B．No wonder | C．No problem | D．No doubt |
He wrote a letter ______ he explains what had happened in the accident.
| A．what | B．which | C．where | D．how |