My parents told me try ______on Christmas Eve because Santa Clause may come and send me some gifts.
| A．not to sleep | B．don't sleep | C．not sleep | D．to not sleep |
He _____ when the UFO arrived.
| A．was sleeping | B．were sleeping |
| C．has slept | D．is asleep |
How long did it take you _____ the classroom yesterday.
| A．to clean | B．clean | C．cleaning | D．Cleaned |
My uncle spent three months_____ a new house.
| A． build | B． built |
| C． building | D． to build |
Remember to ____the lights after school．
| A．turn on | B．turn up |
| C．turn down | D．turn off |
Linda White _____ China for over four years.
| A．has been to | B．has been in |
| C．has gone to | D．Goes |