We have helped the animals in danger _________ it has still a lot of things to do .
A．so B．and C．but
When the teacher came in, all of us _______.
| A．stopped talking | B．stopped to talk | C．stop talking | D．stop to talk |
It ______ that he has been ill for a long time.
| A．seem | B．seems | C．look | D．looks |
I spent half an hour ___________ my homework.
| A．finish doing | B．to finish doing | C．finishing to do | D．finishing doing |
My father gave up ________ at last.
| A．smoke | B．smoking | C．to smoke | D．Smokes |
I haven’t seen the movie and my brother hasn’t _______.
| A．too | B．either | C．also | D．yet |