A week has passed and still nobody has claimed the necklace in the theater.
| A．discovered | B．discovering | C．to be discovered | D．having discovered |
Every minute is made full of our lessons well.
| A．to use, study | B．use, studying | C．use, to study | D．used, studying |
At the meeting, many problems , which mean we still had a long way to go.
| A．came up with | B．came along | C．came to | D．came up |
The students asked me going to be held.
| A．when is the party | B．when the party was |
| C．when the party is | D．when was the party |
The children parents are away working in cities are looked after well.
| A．which | B．whose | C．that | D．who |
— Have you ever come here before?
— No. It is my first time that I to this city.
| A．have been | B．had been | C．came | D．come |