Tom __________ in the library every night over the last three months.
| A．works | B．worked |
| C．has been working | D．had been working |
On Sundays there were a lot of children playing in the park, _______ parents sitting together joking.
| A．their | B．whose | C．which | D．that |
On Sundays there were a lot of children playing in the park, and _______ parents were seated together joking.
| A．their | B．whose | C．which | D．that |
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 |
.On Sundays there were a lot of children playing in the park, _______ parents seated together joking.
| A．their | B．whose | C．which | D．that |
They put forward a lot of plans at the meeting, but none of _______ were carried out in their work.
| A．which | B．them | C．what | D．that |