Having checked the doors were closed, and _______ all the lights were off, the boy opened the door to his bedroom.
| A．why | B．that | C．when | D．where |
— May I speak to Mary? — This is ________ speaking.
| A．I | B．me |
| C．she | D．hers |
This skirt is made ________ your mother ________ her own measure.
| A．for; to | B．for; for |
| C．to; to | D．for; by |
.________ by the advances in technology, many farmers have set up wind farms on their land.
| A．Being encouraged | B．Encouraging |
| C．Encouraged | D．Having encouraged |
On Sundays there were a lot of children playing in the park, _______ parents were seated together joking.
| A．their | B．whose |
| C．which | D．that |
Mr. White ________ at 8:30 for the meeting, but he didn’t show up.
| A．should have arrived | B．should arrive |
| C．should have had arrived | D．should be arriving |