Tell John not to leave the house unless he _______that the lights ______ .
| A．will make sure, turn off | B．makes sure; are turned off |
| C．will make sure; will turn off | D．makes sure; will be turned off |
The question that puzzles them is ___they can finish the work on time.
| A．what it is that | B．what is it that | C．how is it that | D．how it is that |
My father ____ a bus to his office until the workers have had his car fixed next week.
| A．has taken | B．is taking | C．had taken | D．took |
Be sure to make the invitations sent to ____ has taken part in the competition.
| A．who | B．whom | C．whoever | D．whomever |
Lucy is looking for a job ____ can offer her a good salary and ____she can also communicate with a large number of foreigners
| A．where ,where | B．which, which | C．which ,where | D．where, which |
Recently , a number of Taobao sellers have begun offering garments ____styles worn by China’s first lady PengLiyuan.
| A．base on | B．bases on | C．basing on | D．based on |